A by-election, also known as a special election in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

and the

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

, a bye-election in

Ireland Ireland ( ; ga, Éire ; Ulster Scots dialect, Ulster-Scots: ) is an island in the Atlantic Ocean, North Atlantic Ocean, in Northwestern Europe, north-western Europe. It is separated from Great Britain to its east by the North Channel (Grea ...

, a bypoll in

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

, or a Zimni election (

Urdu Urdu (;"Urdu"
''

Pakistan Pakistan ( ur, ), officially the Islamic Republic of Pakistan ( ur, , label=none), is a country in South Asia. It is the world's List of countries and dependencies by population, fifth-most populous country, with a population of almost 24 ...

, is an election used to fill an office that has become vacant between

general election A general election is a political voting election where generally all or most members of a given political body are chosen. These are usually held for a nation, state, or territory's primary legislative body, and are different from by-elections ( ...

s. A vacancy may arise as a result of an incumbent dying or resigning, or when the incumbent becomes ineligible to continue in office (because of a

recall Recall may refer to: * Recall (bugle call), a signal to stop * Recall (information retrieval), a statistical measure * ''ReCALL'' (journal), an academic journal about computer-assisted language learning * Recall (memory) * ''Recall'' (Overwatch ...

, election or appointment to a prohibited dual mandate,

criminal conviction In law, a conviction is the verdict reached by a court of law finding a defendant Guilty (law), guilty of a crime. The opposite of a conviction is an acquittal (that is, "not guilty"). In Scotland, there can also be a verdict of "not proven", w ...

, or failure to maintain a minimum attendance), or when an election is invalidated by voting irregularities. In some cases a vacancy may be filled without a by-election or the office may be left vacant.

Origins

The procedure for filling a vacant seat in the

House of Commons of England The House of Commons of England was the lower house of the Parliament of England (which incorporated Wales) from its development in the 14th century to the union of England and Scotland in 1707, when it was replaced by the House of Commons of ...

was developed during the Reformation Parliament of the 16th century by

Thomas Cromwell Thomas Cromwell (; 1485 – 28 July 1540), briefly Earl of Essex, was an English lawyer and statesman who served as chief minister to King Henry VIII from 1534 to 1540, when he was beheaded on orders of the king, who later blamed false charge ...

; previously a seat had remained empty upon the death of a member. Cromwell devised a new election that would be called by the king at a time of the king's choosing. This made it a simple matter to ensure the seat rewarded an ally of the crown. During the eighteen-year

Cavalier Parliament The Cavalier Parliament of England lasted from 8 May 1661 until 24 January 1679. It was the longest English Parliament, and longer than any Great British or UK Parliament to date, enduring for nearly 18 years of the quarter-century reign of C ...

of Charles II, which lasted from 1661 to 1679, by-elections were the primary means by which new members entered the House of Commons.

In single-member constituencies

By-elections are held in most nations that elect their parliaments through

single-member constituencies A single-member district is an electoral district represented by a single officeholder. It contrasts with a Multiwinner voting, multi-member district, which is represented by multiple officeholders. Single-member districts are also sometimes call ...

, whether

with With or WITH may refer to: * With, a preposition in English * Carl Johannes With (1877–1923), Danish doctor and arachnologist * With (character), a character in ''D. N. Angel'' * ''With'' (novel), a novel by Donald Harrington * ''With'' (album ...

without Without may refer to: * "Without" (''The X-Files''), an episode in the eighth season of ''The X-Files'' * "without", an English preposition * "Without", a film that premiered at the 2011 Slamdance Film Festival * "Without", a song by Jack Savore ...

runoff Runoff, run-off or RUNOFF may refer to: * RUNOFF, the first computer text-formatting program * Runoff or run-off, another name for bleed, printing that lies beyond the edges to which a printed sheet is trimmed * Runoff or run-off, a stock market ...

round. This includes most

Commonwealth A commonwealth is a traditional English term for a political community founded for the common good. Historically, it has been synonymous with "republic". The noun "commonwealth", meaning "public welfare, general good or advantage", dates from the ...

countries, such as the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

and

, as well as non-Commonwealth countries such as

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...

and

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical re ...

(until 2006). In the United States, these contests have been called "special elections" because they do not always occur on

Election Day Election day or polling day is the day on which general elections are held. In many countries, general elections are always held on a Saturday or Sunday, to enable as many voters as possible to participate; while in other countries elections ar ...

like regular congressional elections. Special elections are held when a seat in the

House of Representatives House of Representatives is the name of legislative bodies in many countries and sub-national entitles. In many countries, the House of Representatives is the lower house of a bicameral legislature, with the corresponding upper house often c ...

, state legislature, or local legislature becomes vacant. At the federal level, the

U.S. Constitution The Constitution of the United States is the supreme law of the United States of America. It superseded the Articles of Confederation, the nation's first constitution, in 1789. Originally comprising seven articles, it delineates the natio ...

requires that vacancies in the House of Representatives be filled with a special election (unlike the

Senate A senate is a deliberative assembly, often the upper house or chamber of a bicameral legislature. The name comes from the ancient Roman Senate (Latin: ''Senatus''), so-called as an assembly of the senior (Latin: ''senex'' meaning "the el ...

, where it is up to law of the state involved to determine how the vacancy is filled). In most cases where a vacancy is filled through a special election, a primary will also be held to determine which candidates will represent the major parties.

In multi-member constituencies

When one seat in a multi-member constituency becomes vacant, the consequences vary. For example, a by-election may be held to fill just the vacancy, all the seats in the constituency could be contested in the by-election, or the vacancy could be filled by other means. Typically,

party-list proportional representation Party-list proportional representation (list-PR) is a subset of proportional representation electoral systems in which multiple candidates are elected (e.g., elections to parliament) through their position on an electoral list. They can also be us ...

systems do not hold by-elections. Instead, the most successful unelected candidate named on the vacator's list fills the vacancy automatically. However,

Turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a list of transcontinental countries, transcontinental country located mainly on the Anatolia, Anatolian Peninsula in Western Asia, with ...

is an exception, as it holds by-elections when too many seats become vacant in the parliament (as in

1986 The year 1986 was designated as the International Year of Peace by the United Nations. Events January * January 1 ** Aruba gains increased autonomy from the Netherlands by separating from the Netherlands Antilles. **Spain and Portugal ente ...

) or a repeat vote has to be held (as in

2003 File:2003 Events Collage.png, From top left, clockwise: The crew of STS-107 perished when the Space Shuttle Columbia disintegrated during reentry into Earth's atmosphere; SARS became an epidemic in China, and was a precursor to SARS-CoV-2; A des ...

). In multi-member district systems that do not employ party lists -

single transferable vote Single transferable vote (STV) is a multi-winner electoral system in which voters cast a single vote in the form of a ranked-choice ballot. Voters have the option to rank candidates, and their vote may be transferred according to alternate p ...

single non-transferable vote Single non-transferable vote or SNTV is an electoral system used to elect multiple winners. It is a generalization of first-past-the-post, applied to multi-member districts with each voter casting just one vote. Unlike FPTP, which is a single-winn ...

and

plurality at-large The multiple non-transferable vote (MNTV) is a group of voting system, in which voters elect several representatives at once, with each voter having more than one vote. MNTV uses multi-member electoral districts or only one district, which contai ...

- vacancies may be filled by a by-election. This is done, for example, in the Dáil of the

Republic of Ireland Ireland ( ga, Éire ), also known as the Republic of Ireland (), is a country in north-western Europe consisting of 26 of the 32 counties of the island of Ireland. The capital and largest city is Dublin, on the eastern side of the island. A ...

(STV), in the

Parliament of Vanuatu The Parliament of Vanuatu ( bi, Palamen blong Vanuatu; french: Parlement du Vanuatu) is the unicameral legislative body of the Republic of Vanuatu. It was established by chapter 4 of the 1980 Constitution, upon Vanuatu's independence from Franc ...

(SNTV), and in the

Senate of the Philippines The Senate of the Philippines (Filipino: ''Senado ng Pilipinas'', also ''Mataas na Kapulungan ng Pilipinas'' or "upper chamber") is the upper house of Congress of the bicameral legislature of the Philippines with the House of Representatives as ...

(Pl. AL). In those systems, alternatives to holding a by-election include: # re-determining the election results with the vacators disregarded, as in

Tasmania ) , nickname = , image_map = Tasmania in Australia.svg , map_caption = Location of Tasmania in AustraliaCoordinates: , subdivision_type = Country , subdi ...

or the

Australian Capital Territory The Australian Capital Territory (commonly abbreviated as ACT), known as the Federal Capital Territory (FCT) until 1938, is a landlocked federal territory of Australia containing the national capital Canberra and some surrounding townships. ...

, # keeping the seat vacant until the next

. This usually occurs if a vacancy arises shortly before a planned general election (within six months in New Zealand). # nominating another candidate with the same affiliation as the former member, such as

European Parliament The European Parliament (EP) is one of the legislative bodies of the European Union and one of its seven institutions. Together with the Council of the European Union (known as the Council and informally as the Council of Ministers), it adopts ...

seats in the Republic of Ireland. For the

Australian Senate The Senate is the upper house of the Bicameralism, bicameral Parliament of Australia, the lower house being the House of Representatives (Australia), House of Representatives. The composition and powers of the Senate are established in Chapter ...

(in which each state forms a multi-member constituency elected via

), the state parliament appoints a replacement in the event of a vacancy; in 1977 a referendum amended the Constitution to require that the person appointed must belong to the same political party (if any) as the Senator originally elected to that seat. The states with an

upper house An upper house is one of two Debate chamber, chambers of a bicameralism, bicameral legislature, the other chamber being the lower house.''Bicameralism'' (1997) by George Tsebelis The house formally designated as the upper house is usually smalle ...

elected via STV (NSW, Victoria, and South Australia) use the same method, except for Western Australia, which holds a recount of ballots to determine the new winner, with sitting members retaining their seats.

In mixed systems

Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to the ...

and

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

still hold by-elections, despite having adopted the

mixed-member proportional representation Mixed-member proportional representation (MMP or MMPR) is a mixed electoral system in which votes cast are considered in local elections and also to determine overall party vote tallies, which are used to allocate additional members to produce ...

system, in which some members are chosen by

party list An electoral list is a grouping of candidates for election, usually found in proportional or mixed electoral systems, but also in some plurality electoral systems. An electoral list can be registered by a political party (a party list) or can ...

s. The same is true for Italy, which employes a

parallel voting Parallel voting is a type of mixed electoral system in which representatives are voted into a single chamber using two or more different systems, most often first-past-the-post voting (FPTP) with party-list proportional representation (PR). It i ...

system. In all three countries, by-elections where voters elect their preferred candidate are only used to fill a vacancy in a constituency seat. For example, the death of

Donald Dewar Donald Campbell Dewar (21 August 1937 – 11 October 2000) was a Scottish politician who served as the inaugural First Minister of Scotland and Leader of the Labour Party in Scotland from 1999 until his death in 2000. He previously served as ...

resulted in a by-election for the constituency of Glasgow Anniesland. If a vacancy arises from the death or resignation of a party list member, the next unelected candidate on the party list is offered the seat. If that candidate has died or declines the seat, it is offered to subsequent candidates on the list until one accepts the seat. For example, on the resignation of

Darren Hughes Darren Colyn Hughes (born 3 April 1978) is a New Zealand former Member of Parliament between 2002 and 2011, first elected at the age of 24. He represented the New Zealand Labour Party, Labour Party and was a Minister outside Cabinet in the Fift ...

in March 2011,

Louisa Wall Louisa Hareruia Wall (born 17 February 1972) is a former New Zealand Labour Party politician who served as a Member of Parliament (MP) from 2011 to 2022. She has represented New Zealand in both netball as a Silver Fern and rugby union as a m ...

was elected after all the five candidates above her on the

New Zealand Labour Party The New Zealand Labour Party ( mi, Rōpū Reipa o Aotearoa), or simply Labour (), is a centre-left political party in New Zealand. The party's platform programme describes its founding principle as democratic socialism, while observers descr ...

's list declined the seat. In the German

Bundestag The Bundestag (, "Federal Diet") is the German federal parliament. It is the only federal representative body that is directly elected by the German people. It is comparable to the United States House of Representatives or the House of Commons ...

, which uses mixed-member proportional representation, by-elections were originally held upon the vacancy of any constituency seat, in the same manner as Scotland and New Zealand. This was changed in January 1953, since which time vacancies in constituency seats have been filled by the next candidate on the state list of the party which won the seat, in the same manner as vacancies among list seats. By-elections are now only held if a vacancy arises in a constituency seat and there is no associated party list with which to fill it – typically, if the former member was elected as an

independent Independent or Independents may refer to: Arts, entertainment, and media Artist groups * Independents (artist group), a group of modernist painters based in the New Hope, Pennsylvania, area of the United States during the early 1930s * Independ ...

. This is referred to as a substitute election (''Ersatzwahl''). Since no independents have been elected to the Bundestag since the first legislative period, no such substitute election has ever taken place.

Significance and consequences

Direct effects

By-elections can be crucial when the ruling party has only a small majority. In

parliamentary system A parliamentary system, or parliamentarian democracy, is a system of democratic governance of a state (or subordinate entity) where the executive derives its democratic legitimacy from its ability to command the support ("confidence") of the ...

s, party discipline is often so strong that the governing party can only lose a

vote of no confidence A motion of no confidence, also variously called a vote of no confidence, no-confidence motion, motion of confidence, or vote of confidence, is a statement or vote about whether a person in a position of responsibility like in government or mana ...

after losing enough by-elections for it to become a

minority government A minority government, minority cabinet, minority administration, or a minority parliament is a government and Cabinet (government), cabinet formed in a parliamentary system when a political party or Coalition government, coalition of parties do ...

. Examples are the Labour government of James Callaghan 1976–1979 and Conservative government of John Major 1992–1997. In the

United States Senate The United States Senate is the upper chamber of the United States Congress, with the House of Representatives being the lower chamber. Together they compose the national bicameral legislature of the United States. The composition and pow ...

, Scott Brown's election in 2010 ended the

filibuster A filibuster is a political procedure in which one or more members of a legislative body prolong debate on proposed legislation so as to delay or entirely prevent decision. It is sometimes referred to as "talking a bill to death" or "talking out ...

-proof

supermajority A supermajority, supra-majority, qualified majority, or special majority is a requirement for a proposal to gain a specified level of support which is greater than the threshold of more than one-half used for a simple majority. Supermajority ru ...

formerly enjoyed by Democrats. By-elections can also be important if a minority party needs to gain one or more seats in order to gain

official party status Official party status refers to the Westminster practice which is officially used in the Parliament of Canada and the provincial legislatures of recognizing parliamentary caucuses of political parties. In official documents, this is sometimes re ...

or the balance of power in a minority or coalition situation. For example,

Andrea Horwath Andrea Horwath (; born October 24, 1962) is a Canadian politician who has been the 58th mayor of Hamilton since 2022. Horwath previously served as the member of Provincial Parliament (MPP) for Hamilton Centre from 2004 to 2022, as leader of t ...

's win in an

Ontario Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central Ca ...

provincial by-election in 2004 allowed the

Ontario New Democratic Party The Ontario New Democratic Party (french: link=no, Nouveau Parti démocratique de l'Ontario; abbr. ONDP or NDP) is a social-democratic political party in Ontario, Canada. The party currently forms the Official Opposition in Ontario following th ...

to regain official party status with important results in terms of parliamentary privileges and funding.

Predictive value

Non-experts often interpret by-election results as a

bellwether A bellwether is a leader or an indicator of trends.bellwether
" ''Cambridge Dictionary''. Ret ...

or early indicator of the results of the next general election, but political scientists generally caution against overinterpretation. The evidence suggests that while the margin of victory relative to the district's normal performance may be relevant, other indicators generally provide stronger evidence with a larger sample size. A 2016 study of special elections to the

United States House of Representatives The United States House of Representatives, often referred to as the House of Representatives, the U.S. House, or simply the House, is the Lower house, lower chamber of the United States Congress, with the United States Senate, Senate being ...

found "that while candidate characteristics affect special election outcomes, presidential approval is predictive of special election outcomes as well. Furthermore, we find that the effect of presidential approval on special election outcomes has increased in magnitude from 1995 to 2014, with the 2002 midterm representing an important juncture in the nationalization of special elections." Seats which have unexpectedly changed hands in by-elections often revert to the former party in the next general election. One reason for this is that

voter turnout In political science, voter turnout is the participation rate (often defined as those who cast a ballot) of a given election. This can be the percentage of registered voters, eligible voters, or all voting-age people. According to Stanford Unive ...

at by-elections tends to be lower and skewed toward highly motivated supporters of the opposition party.

Indirect impact

By-election upsets can have a psychological impact by creating a sense of momentum for one party or a sense of impending defeat for a government. For example, in Canada,

Deborah Grey Deborah Cleland Grey, (born July 1, 1952) is a retired Canadian member of Parliament from Alberta for the Reform Party of Canada, the Canadian Alliance, and the Conservative Party of Canada. She was the first female leader of the Opposition in ...

's 1989 by-election victory in Beaver River was seen as evidence that the newly formed

Reform Party of Canada The Reform Party of Canada (french: Parti réformiste du Canada) was a right-wing populist and conservative federal political party in Canada that existed under that name from 1987 to 2000. Reform was founded as a Western Canada-based protes ...

would be a serious political contender and that it posed a serious political threat for the ruling Progressive Conservatives. Similarly, the upset 1960 by-election victory of

Walter Pitman Walter George Pitman (May 18, 1929 – June 12, 2018) was an educator and politician in Ontario, Canada. Background Born in Toronto, Ontario, he received a Bachelor of Arts in 1952 and a Master of Arts in 1954 from the University of Toronto. He ...

Peterborough Peterborough () is a cathedral city in Cambridgeshire, east of England. It is the largest part of the City of Peterborough unitary authority district (which covers a larger area than Peterborough itself). It was part of Northamptonshire until ...

as a " New Party" candidate was a significant boost for the movement to replace the

Co-operative Commonwealth Federation The Co-operative Commonwealth Federation (CCF; french: Fédération du Commonwealth Coopératif, FCC); from 1955 the Social Democratic Party of Canada (''french: Parti social démocratique du Canada''), was a federal democratic socialism, democra ...

with an unnamed "New Party" which would be integrated with the labour movement. Pitman's candidacy in a riding in which the CCF was traditionally weak was seen as a test of this concept, and his upset victory convinced the CCF and the labour movement to launch the

New Democratic Party The New Democratic Party (NDP; french: Nouveau Parti démocratique, NPD) is a federal political party in Canada. Widely described as social democratic,The party is widely described as social democratic: * * * * * * * * * * * * t ...

(NDP). Gilles Duceppe's 1990 upset landslide by-election victory in

Laurier—Sainte-Marie Laurier—Sainte-Marie is a federal electoral district in Downtown Montreal, Quebec, Canada, that has been represented in the House of Commons of Canada since 1988. Its population in 2016 was 111,835. Geography The district includes Côte Sai ...

with 66% of the vote on behalf of the newly formed

Bloc Québécois The Bloc Québécois (BQ; , "Québécois people, Quebecer Voting bloc, Bloc") is a list of federal political parties in Canada, federal political party in Canada devoted to Quebec nationalism and the promotion of Quebec sovereignty movement, Que ...

was the first electoral test for what was initially a loose parliamentary formation created two months earlier after several Quebec MPs defected from the Progressive Conservative and Liberal parties to protest the failure of the

Meech Lake Accord The Meech Lake Accord (french: Accord du lac Meech) was a series of proposed amendments to the Constitution of Canada negotiated in 1987 by Prime Minister Brian Mulroney and all 10 Canadian provincial premiers. It was intended to persuade the gove ...

and provided the first indication that the party could be a serious force in the province of Quebec. On the strength of the by-election victory, the BQ went on to be officially formed as a party in 1991 and win 54 seats in the 1993 federal election, enough to form the Official Opposition. By-elections may occur singly or in small bunches, especially if the authority responsible for calling them has discretion over the timing and can procrastinate. They are sometimes bunched to save money, as holding multiple by-elections is likely to cost more than holding a by-election to fill the vacancies all at once. In Canada, in 1978, 15 by-elections were held on a single date, restoring the House of Commons to 264 members. The media called it a "mini-election", a test of the Liberal government's popularity with a general election due in less than a year. In the United Kingdom, In September 1984, the Leader of the

Greater London Council The Greater London Council (GLC) was the top-tier local government administrative body for Greater London from 1965 to 1986. It replaced the earlier London County Council (LCC) which had covered a much smaller area. The GLC was dissolved in 198 ...

Ken Livingstone Kenneth Robert Livingstone (born 17 June 1945) is an English politician who served as the Leader of the Greater London Council (GLC) from 1981 until the council was abolished in 1986, and as Mayor of London from the creation of the office i ...

and three other

Labour Labour or labor may refer to: * Childbirth, the delivery of a baby * Labour (human activity), or work ** Manual labour, physical work ** Wage labour, a socioeconomic relationship between a worker and an employer ** Organized labour and the labour ...

councillors resigned and stood in simultaneous by-elections in an attempt to stage a mini-referendum on the Thatcher government's proposal to abolish the GLC. The effect of the manoeuvre was blunted when the

Conservative Party The Conservative Party is a name used by many political parties around the world. These political parties are generally right-wing though their exact ideologies can range from center-right to far-right. Political parties called The Conservative P ...

refused to stand candidates against them, and the following year the GLC was abolished.

Upsets

Australia

The

1918 Swan by-election The 1918 Swan by-election was a by-election for the Division of Swan in the Australian House of Representatives, following the death of the sitting member Sir John Forrest. Held on 26 October 1918, the by-election led to the election of the younges ...

was held following the death of

John Forrest Sir John Forrest (22 August 1847 – 2 SeptemberSome sources give the date as 3 September 1918 1918) was an Australian explorer and politician. He was the first premier of Western Australia (1890–1901) and a long-serving cabinet minister i ...

. The seat was traditionally a safe seat for the Nationalist Party against the Labor Party, but the emergence of the Country Party lead to a "three-cornered contest". As Australia used a

first-past-the-post In a first-past-the-post electoral system (FPTP or FPP), formally called single-member plurality voting (SMP) when used in single-member districts or informally choose-one voting in contrast to ranked voting, or score voting, voters cast their ...

system at the time, the conservative vote was split between the Country and Nationalists, allowing Labor candidate

Edwin Corboy Edwin Wilkie "Ted" Corboy (24 August 1896 – 6 August 1950) was an Australian politician. From 1918 to 2010, he held the record as the youngest ever Australian Member of Parliament#Australia, Member of Parliament. Early life Born in Victoria, ...

to come in first place and win the seat. The Swan by-election is cited as the reason for the introduction of

preferential voting {{short description, Election systems Preferential voting or preference voting (PV) may refer to different election systems or groups of election systems: * Ranked voting methods, all election methods that involve ranking candidates in order of pr ...

, to prevent Labor from benefiting from a divided opposition in the future. The 2018 Wentworth by-election was held after the resignation of former prime minister

Malcolm Turnbull Malcolm Bligh Turnbull (born 24 October 1954) is an Australian former politician and businessman who served as the 29th prime minister of Australia from 2015 to 2018. He held office as leader of the Liberal Party of Australia. Turnbull grad ...

, who had served as the member for

Wentworth Wentworth may refer to: People * Wentworth (surname) * Judith Blunt-Lytton, 16th Baroness Wentworth (1873–1957), Lady Wentworth, notable Arabian horse breeder * S. Wentworth Horton (1885–1960), New York state senator * Wentworth Miller (born 1 ...

since 2004. Wentworth was considered an exceptionally safe seat for the

Liberal Party The Liberal Party is any of many political parties around the world. The meaning of ''liberal'' varies around the world, ranging from liberal conservatism on the right to social liberalism on the left. __TOC__ Active liberal parties This is a li ...

, as it had only ever been held by the Liberal Party and its predecessor parties since its creation in 1901. Former Ambassador to Israel

Dave Sharma Devanand Noel "Dave" Sharma (born 21 December 1975) is an Australian former politician and former public servant and diplomat who served as member of parliament for Wentworth from 2019 to 2022. He lost the seat at the 2022 election to indep ...

was preselected as the Liberal Party's candidate for the by-election. The major challenger in the by-election was independent candidate

Kerryn Phelps Kerryn Lyndel Phelps (born 14 December 1957) is an Australian medical practitioner, public health and civil rights advocate, medical educator and former politician. She was the first woman to be elected president of the Australian Medical Asso ...

. A huge 17.7%

two-party-preferred In Australian politics, the two-party-preferred vote (TPP or 2PP) is the result of an election or opinion poll after preferences have been distributed to the highest two candidates, who in some cases can be independents. For the purposes of TPP, ...

swing was required for the Liberal Party to lose the seat. Ultimately, the Liberals suffered a 19.0% swing to Phelps, the largest by-election swing in Australian history, which won her the seat. This loss deprived the Liberal Party of its majority in federal Parliament, forcing them into a

Canada

In 1942, the Conservatives'

Arthur Meighen Arthur Meighen (; June 16, 1874 – August 5, 1960) was a Canadian lawyer and politician who served as the ninth prime minister of Canada from 1920 to 1921 and from June to September 1926. He led the Conservative Party from 1920 to 1926 and fro ...

(who had already served as Prime Minister during the 1920s) sought to re-enter the

House of Commons of Canada The House of Commons of Canada (french: Chambre des communes du Canada) is the lower house of the Parliament of Canada. Together with the Crown and the Senate of Canada, they comprise the bicameral legislature of Canada. The House of Common ...

through a by-election in

York South York South was an electoral district (or "riding") in Ontario, Canada, that was represented in the House of Commons of Canada from 1904 to 1979. The riding is notable for the 1942 federal by-election in which newly elected Conservative leader Ar ...

. His surprise defeat at the hand of Joseph Noseworthy of the

ended his political career, and may also have been a factor in the Conservative Party's decision to move to the left and rebrand itself the Progressive Conservative Party under Meighen's replacement. Noseworthy's victory was also a significant breakthrough for the CCF giving it credibility as a national party where it has previously been seen as a Western Canadian regional protest party. On November 1, 1944, General

Andrew McNaughton Andrew is the English form of a given name common in many countries. In the 1990s, it was among the top ten most popular names given to boys in English-speaking countries. "Andrew" is frequently shortened to "Andy" or "Drew". The word is derived ...

was appointed to Cabinet as

Minister of Defence A defence minister or minister of defence is a Cabinet (government), cabinet official position in charge of a ministry of defense, which regulates the armed forces in sovereign states. The role of a defence minister varies considerably from coun ...

without having a seat in parliament, after his predecessor resigned during the

Conscription Crisis of 1944 The Conscription Crisis of 1944 was a political and military crisis following the introduction of forced military service for men in Canada during World War II. It was similar to the Conscription Crisis of 1917, but not as politically damaging. ...

. A by-election was arranged in

Grey North Grey North was a federal electoral district represented in the House of Commons of Canada from 1867 to 1968. It was located in the province of Ontario. It was created by the British North America Act of 1867, which divided the County of Grey in ...

which the opposition Progressive Conservative party contested. The major campaign issue became the government's policy of "limited conscription" during World War II, which McNaughton supported, and which the Conservatives rejected. They called, instead, for "full conscription". McNaughton was defeated in the February 5, 1945 by-election. As a result, with confidence in his government undermined,

Prime Minister A prime minister, premier or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. Under those systems, a prime minister is not ...

William Lyon Mackenzie King William Lyon Mackenzie King (December 17, 1874 – July 22, 1950) was a Canadian statesman and politician who served as the tenth prime minister of Canada for three non-consecutive terms from 1921 to 1926, 1926 to 1930, and 1935 to 1948. A Li ...

called the 1945 federal election several weeks later; originally he had intended to postpone the election until the war was clearly won. McNaughton sought a seat in the 1945 contest but was again defeated, and resigned shortly after. The most recent example of a cabinet minister appointed from outside parliament having to resign after losing a by-election was in 1975, when Minister of Communications

Pierre Juneau Pierre Juneau, , (October 17, 1922 – February 21, 2012) was a Canadian film and broadcast executive, a one-time member of the Canadian Cabinet, the first chairman of the Canadian Radio-television and Telecommunications Commission (CRTC) and ...

was appointed to

Pierre Trudeau Joseph Philippe Pierre Yves Elliott Trudeau ( , ; October 18, 1919 – September 28, 2000), also referred to by his initials PET, was a Canadian lawyer and politician who served as the 15th prime minister of Canada The prime mini ...

's Liberal cabinet directly from the private sector, and tried to enter parliament through a by-election in Hochelaga. Juneau unexpectedly lost to the Progressive Conservative candidate and resigned from cabinet 10 days after his by-election defeat. In

John Tory John Howard Tory (born May 28, 1954) is a Canadian politician who has served as the 65th and current mayor of Toronto since 2014. After a career as a lawyer, political strategist and businessman, Tory ran as a mayoral candidate in the 2003 ...

, leader of the

Progressive Conservative Party of Ontario The Progressive Conservative Party of Ontario (french: Parti progressiste-conservateur de l'Ontario), often shortened to the Ontario PC Party or simply the PCs, colloquially known as the Tories, is a centre-right political party in Ontario, Canada ...

ran in a 2009 by-election in

Haliburton—Kawartha Lakes—Brock Haliburton—Kawartha Lakes—Brock (formerly Haliburton—Victoria—Brock and Victoria—Haliburton) is a federal electoral district in central Ontario, Canada, that has been represented in the House of Commons of Canada since 1968. Geography ...

, after he convinced one of his caucus members to step down, in hopes of re-entering the

Ontario legislature The Legislative Assembly of Ontario (OLA, french: Assemblée législative de l'Ontario) is the legislative chamber of the Canadian province of Ontario. Its elected members are known as Members of Provincial Parliament (MPPs). Bills passed by ...

. His by-election defeat resulted in his resignation as party leader.

Hong Kong

In the March 2018 Hong Kong by-elections, the

pro-democracy camp The pro-democracy camp, also known as the pan-democracy camp, is a political alignment in Hong Kong that supports increased democracy, namely the universal suffrage of the Chief Executive and the Legislative Council as given by the Basic L ...

lost their majority status for the first time in the

Geographical constituency In Hong Kong, geographical constituencies, as opposed to functional constituencies, are elected by all eligible voters according to geographically demarcated constituencies. There are currently 5 geographical constituencies in Hong Kong, returnin ...

part of the

Legislative Council of Hong Kong The Legislative Council of the Hong Kong Special Administrative Region (LegCo) is the unicameral legislature of Hong Kong. It sits under China's " one country, two systems" constitutional arrangement, and is the power centre of Hong Kong ...

By-elections were held due to six pro-democracy lawmakers were disqualified by the

High Court of Hong Kong The High Court of the Hong Kong Special Administrative Region is a part of the legal system of Hong Kong. It consists of the Court of Appeal and the Court of First Instance; it deals with criminal and civil cases which have risen beyond th ...

during Oath-taking controversy. The pro-democracy camp was considered safe in de facto

first past the post In a first-past-the-post electoral system (FPTP or FPP), formally called single-member plurality voting (SMP) when used in single-member districts or informally choose-one voting in contrast to ranked voting, or score voting, voters cast their ...

by-election because both pro-democracy camp and

pro-Beijing camp The pro-Beijing camp, pro-establishment camp, pro-government camp or pro-China camp refers to a political alignment in Hong Kong which generally supports the policies of the Beijing central government and the Chinese Communist Party (CCP) t ...

would only nominate one candidate to fill in the by-election. However, pro-democracy camp lost twice in

Kowloon West Kowloon West is the western part of Kowloon, covering the Yau Tsim Mong and Sham Shui Po District, with Kowloon City District occasionally included. History The boundary of Kowloon West is not strictly defined and hence varies. While traditio ...

, which was considered as a safe seat for the pro-democracy camp.

Ireland

by-election A by-election, also known as a special election in the United States and the Philippines, a bye-election in Ireland, a bypoll in India, or a Zimni election (Urdu: ضمنی انتخاب, supplementary election) in Pakistan, is an election used to f ...

held in Dublin South-West during 2014 provided a very surprising upset. The

Sinn Féin Sinn Féin ( , ; en, " eOurselves") is an Irish republican and democratic socialist political party active throughout both the Republic of Ireland and Northern Ireland. The original Sinn Féin organisation was founded in 1905 by Arthur Gri ...

candidate, Cathal King, was the favourite to take the seat. Sinn Féin had done extremely well in the area during that year's local elections. Sinn Féin captured high percentages of the first preference vote across the constituency. However, the

Anti-Austerity Alliance Solidarity ( ga, Neart le Chéile), formerly known as the Anti-Austerity Alliance (AAA), is a socialist political party in Ireland, launched in 2014. It had been registered as a political party to contest local elections, and ran at least forty c ...

candidate, Paul Murphy, was elected on the eighth count. Despite Murphy having received a lower first preference total than Cathal King, he outperformed the Sinn Féin candidate in attracting transfers. Murphy then took his seat in the 31st Dáil. As a direct result of this defeat in the by-election, Sinn Féin hardened their stance against

Irish Water ''Uisce Éireann'', formerly and commonly known as Irish Water, is a state-owned water utility company in Ireland. It was created by the Irish Government through the Water Services Act 2013, which formally created the company as a subsidiary of ...

and called for the complete abolition of water charges in Ireland.

United Kingdom

In 1965 the

British Foreign Secretary The secretary of state for foreign, Commonwealth and development affairs, known as the foreign secretary, is a minister of the Crown of the Government of the United Kingdom and head of the Foreign, Commonwealth and Development Office. Seen ...

Patrick Gordon Walker Patrick Chrestien Gordon Walker, Baron Gordon-Walker, (7 April 1907 – 2 December 1980) was a British Labour Party politician. He was a Member of Parliament for nearly thirty years, and served twice as a Cabinet Minister. He lost his Smethwi ...

stood in the Leyton by-election for election to the

UK Parliament The Parliament of the United Kingdom is the supreme legislative body of the United Kingdom, the Crown Dependencies and the British Overseas Territories. It meets at the Palace of Westminster, London. It alone possesses legislative supremac ...

, having been defeated in controversial circumstances in

Smethwick Smethwick () is an industrial town in Sandwell, West Midlands, England. It lies west of Birmingham city centre. Historically it was in Staffordshire. In 2019, the ward of Smethwick had an estimated population of 15,246, while the wider bu ...

at the previous year's

. His appointment as a senior minister while not a member of either house of Parliament was against convention, and he therefore sought to regularise the position by standing in the first available by-election, which was at

Leyton Leyton () is a town in east London, England, within the London Borough of Waltham Forest. It borders Walthamstow to the north, Leytonstone to the east, and Stratford to the south, with Clapton, Hackney Wick and Homerton, across the River L ...

in January 1965. However a strong swing against Labour resulted in Gordon Walker's defeat: as a result, he resigned as Foreign Secretary.

United States

In 2010,

Republican Republican can refer to: Political ideology * An advocate of a republic, a type of government that is not a monarchy or dictatorship, and is usually associated with the rule of law. ** Republicanism, the ideology in support of republics or agains ...

Scott Brown Scott Brown may refer to: Sportsmen *Scott Brown (American football), American college football coach of Kentucky State * Scott Brown (baseball) (born 1956), former Major League Baseball pitcher for the Cincinnati Reds *Scott Brown (footballer, bor ...

defeated

Martha Coakley Martha Mary Coakley (born July 14, 1953) is an American lobbyist and lawyer who served as Attorney General of Massachusetts from 2007 to 2015. Prior to serving as Attorney General, she was District Attorney of Middlesex County from 1999 to 20 ...

in the Massachusetts special election to the United States Senate. Coakley, a

Democrat Democrat, Democrats, or Democratic may refer to: Politics *A proponent of democracy, or democratic government; a form of government involving rule by the people. *A member of a Democratic Party: **Democratic Party (United States) (D) **Democratic ...

, had been widely expected to win, but Brown unexpectedly closed the gap and won, a shocking result in the heavily-Democratic state of Massachusetts. This eliminated the Democratic Party's

filibuster-proof Cloture (, also ), closure or, informally, a guillotine, is a motion (parliamentary procedure), motion or process in parliamentary procedure aimed at bringing debate to a quick end. The cloture procedure originated in the National Assembly (Fran ...

majority of 60 votes. Another shocking upset occurred in the 2017 special election in Alabama, one of the most heavily Republican states in the nation. Democrat Doug Jones defeated Republican

Roy Moore Roy Stewart Moore (born February 11, 1947) is an American politician, lawyer, and jurist who served as the 27th and 31st chief justice of the Supreme Court of Alabama from 2001 to 2003 and again from 2013 to 2017, each time being removed fro ...

in a close race after Moore was credibly accused of sexual assault by multiple women.

Notes

References

External links

Electing Local Authorities
��article from th
ACE Project
{{DEFAULTSORT:By-Election Elections by type