The 2010 United States Senate special election in Delaware took place on November 2, 2010, concurrently with elections to the
United States Senate
The United States Senate is a chamber of the Bicameralism, bicameral United States Congress; it is the upper house, with the United States House of Representatives, U.S. House of Representatives being the lower house. Together, the Senate and ...
in other states, as well as elections to the
United States House of Representatives
The United States House of Representatives is a chamber of the Bicameralism, bicameral United States Congress; it is the lower house, with the U.S. Senate being the upper house. Together, the House and Senate have the authority under Artic ...
and various state and local elections. It was a
special election
A by-election, also known as a special election in the United States and the Philippines, or a bypoll in India, is an election used to fill an office that has become vacant between general elections.
A vacancy may arise as a result of an incumben ...
to fill Delaware's Class II Senate seat, then held by
Democrat Ted Kaufman, an appointee. The seat had been previously held by the state's longest-serving senator, Democrat
Joe Biden
Joseph Robinette Biden Jr. (born November 20, 1942) is an American politician who was the 46th president of the United States from 2021 to 2025. A member of the Democratic Party (United States), Democratic Party, he served as the 47th vice p ...
, who vacated it when he became
Vice President of the United States
The vice president of the United States (VPOTUS) is the second-highest ranking office in the Executive branch of the United States government, executive branch of the U.S. federal government, after the president of the United States, and ranks f ...
in 2009.
The state's primary election occurred on September 14, 2010.
Republican U.S. Representative and former Governor
Mike Castle was believed to be heavily favored to win both the primary and the general election. However, Castle was upset by
Christine O'Donnell in a primary contest that had national visibility. During the general election campaign, O'Donnell, a
Tea Party candidate, drew media attention for making several false claims and gaffes, as well as an unusual campaign ad in which she denied that she was a witch. In the general election, O'Donnell lost to Democratic nominee
Chris Coons
Christopher Andrew Coons (born September 9, 1963) is an American lawyer and politician serving as the Seniority in the United States Senate, senior United States Senate, United States senator from Delaware, a seat he has held since 2010. A member ...
57% to 40%. Coons was sworn in on November 15, 2010, and served out the remainder of the term ending in 2015. This was the first open Senate seat in Delaware since
1970
Events
January
* January 1 – Unix time epoch reached at 00:00:00 UTC.
* January 5 – The 7.1 1970 Tonghai earthquake, Tonghai earthquake shakes Tonghai County, Yunnan province, China, with a maximum Mercalli intensity scale, Mercalli ...
, and the first in this seat since
1913
Events January
* January – Joseph Stalin travels to Vienna to research his ''Marxism and the National Question''. This means that, during this month, Stalin, Hitler, Trotsky and Tito are all living in the city.
* January 3 &ndash ...
.
Background
In this seat's most recent election
in 2008, longtime Democratic incumbent
Joe Biden
Joseph Robinette Biden Jr. (born November 20, 1942) is an American politician who was the 46th president of the United States from 2021 to 2025. A member of the Democratic Party (United States), Democratic Party, he served as the 47th vice p ...
had defeated Republican
Christine O'Donnell.
However, Biden was also elected
Vice President of the United States
The vice president of the United States (VPOTUS) is the second-highest ranking office in the Executive branch of the United States government, executive branch of the U.S. federal government, after the president of the United States, and ranks f ...
in 2008 and was required to resign from the Senate by Article I, Section 6 of the
United States Constitution
The Constitution of the United States is the Supremacy Clause, supreme law of the United States, United States of America. It superseded the Articles of Confederation, the nation's first constitution, on March 4, 1789. Originally includi ...
in order to assume the Vice Presidency. Although Biden was sworn in for a seventh term early in January 2009, he resigned from the Senate on January 15, 2009, and was succeeded by Kaufman the following day.
Those discussed as possible appointees to replace Biden included his son,
Delaware Attorney General Beau Biden
Joseph Robinette "Beau" Biden III (February 3, 1969 – May 30, 2015) was an American politician, lawyer, and officer in the Judge Advocate General's Corps, U.S. Army, Army Judge Advocate General's Corps from Wilmington, Delaware, Wilmingt ...
, outgoing Lt. Gov.
John Carney,
Delaware Supreme Court
The Delaware Supreme Court is the sole appellate court in the United States state of Delaware. Because Delaware is a popular haven for corporations, the Court has developed a worldwide reputation as a respected source of corporate law decisions, ...
Chief Justice Myron T. Steele,
Delaware Secretary of State Harriet Smith Windsor, Delaware Correction Commissioner
Carl C. Danberg, former
Delaware House of Representatives
The Delaware State House of Representatives is the lower house of the Delaware General Assembly, the state legislature of the U.S. state of Delaware. It is composed of 41 Representatives from an equal number of constituencies, each of whom is ...
member Robert L. Byrd, and
New Castle County Executive
Chris Coons
Christopher Andrew Coons (born September 9, 1963) is an American lawyer and politician serving as the Seniority in the United States Senate, senior United States Senate, United States senator from Delaware, a seat he has held since 2010. A member ...
.
On November 24, 2008, after Biden's election to the vice presidency but before his resignation, outgoing
Governor
A governor is an politician, administrative leader and head of a polity or Region#Political regions, political region, in some cases, such as governor-general, governors-general, as the head of a state's official representative. Depending on the ...
Ruth Ann Minner
Ruth Ann Minner ( Coverdale; January 17, 1935 – November 4, 2021) was an American politician and businesswoman who served as the 72nd List of governors of Delaware, governor of Delaware from 2001 to 2009. She previously served in the Delaware G ...
announced that she would appoint Biden's former chief of staff, a member of the
Broadcasting Board of Governors named
Ted Kaufman, as Biden's temporary successor. Minner said, "I believe Ted Kaufman meets every test I set for this office. His political views are close to Sen. Biden's, and he has agreed to focus solely on doing the people's work, not seeking re-election."
Biden resigned in January 2009; Minner formally appointed Kaufman to the seat shortly thereafter.
Republican primary
Candidates
*
Mike Castle,
U.S. Representative from ; former
governor
A governor is an politician, administrative leader and head of a polity or Region#Political regions, political region, in some cases, such as governor-general, governors-general, as the head of a state's official representative. Depending on the ...
and
lieutenant governor of Delaware
*
Christine O'Donnell, political commentator and
perennial candidate
A perennial candidate is a political candidate who frequently runs for elected office and rarely, if ever, wins. Perennial candidates are most common where there is no limit on the number of times that a person can run for office and little cost ...
Campaign
In April 2009, Representative Mike Castle stated, "there's probably a better chance I'll run for the Senate than the House.
utI said there's a chance I won't run at all." On October 6, 2009, Castle announced that he would in fact run for the Senate seat. After her 2008 loss to Biden, Christine O'Donnell had indicated she would strongly consider running for the seat again in 2010, asking supporters on her website to "save your yard sign!!" On February 12, 2009, O'Donnell had announced her candidacy. She reiterated that she was in the race even after Castle announced his candidacy in October 2009, and formally launched her campaign on March 10, 2010. In her remarks, O'Donnell criticized excessive government spending, said that Castle was the most liberal Republican in the House, and said that the
Tea Party movement
The Tea Party movement was an American fiscally conservative political movement within the Republican Party that began in 2007, catapulted into the mainstream by Congressman Ron Paul's presidential campaign. The movement expanded in resp ...
and grassroots anti-incumbent trends would be in her favor.
When a report from ''
The News Journal
''The News Journal'' is a daily newspaper in Wilmington, Delaware. It is headquartered in unincorporated New Castle County, Delaware, near New Castle, and is owned by Gannett.
History
The ancestry of the News Journal reflects the mergers of ...
'' in March 2010 detailed O'Donnell's fiscal difficulties, she attributed the problems to misunderstandings and errors, and said, "I think the fact that I have struggled financially is what makes me so sympathetic."
[ ] Nevertheless, her financial problems became a focal point of establishment Republican attacks against her.
A July 2010
Rasmussen Reports poll showed O'Donnell running ahead of Democratic Senate candidate
Chris Coons
Christopher Andrew Coons (born September 9, 1963) is an American lawyer and politician serving as the Seniority in the United States Senate, senior United States Senate, United States senator from Delaware, a seat he has held since 2010. A member ...
by a margin of 41 to 39 percent in a hypothetical matchup. During this time she picked up the endorsements of the
Susan B. Anthony List
Susan B. Anthony Pro-Life America (formerly Susan B. Anthony List) is an American 501(c)(4) non-profit organization that seeks to reduce and ultimately end abortion in the US, by supporting United States anti-abortion movement, anti-abortion poli ...
, the
Tea Party Express, which called her a "strong voice for conservative constitutionalist principles", and the
Family Research Council.
O'Donnell supporters were heartened by the late August primary victory in Alaska of little-known, Tea Party-backed insurgent
Joe Miller over incumbent Republican Senator
Lisa Murkowski
Lisa Ann Murkowski ( ; born May 22, 1957) is an American attorney and politician serving as the Seniority in the United States Senate, senior United States senator from the state of Alaska, having held the seat since 2002. She is the first woman ...
.
The Tea Party Express said it might spend as much as $600,000 backing O'Donnell.
The added buzz about her campaign and the possibility that another establishment Republican figure might be defeated by an insurgent brought national attention to the race.
The same attention also brought additional scrutiny on her record and financial history, including a contentious interview on
WGMD radio. She had claimed that she beat or tied Joe Biden in two of the state's three counties in their 2008 campaign. Later, she admitted this was inaccurate, and that she had lost all three counties.
As September began, the tone of the race grew nastier, with
Delaware Republican Party
The Republican State Committee of Delaware is the affiliate of the United States Republican Party in Delaware. It has five regional offices in Kent County, Western New Castle County, Central New Castle County, Northern New Castle County, and Su ...
chair Tom Ross saying, "Is Christine O'Donnell actually this unhinged from reality? Or is she simply a liar, whose total lack of respect for Delaware voters leads her to deliberately and repeatedly deny the clear facts surrounding her many personal and professional failures?"
Ross also said, "She's not a viable candidate for any office in the state of Delaware. She could not be elected dog catcher."
The O'Donnell campaign generated controversy in early September when a political consulting firm hired by O'Donnell released a web video insinuating that her opponent Castle was having a gay affair. O'Donnell quickly distanced herself from the claims, pointing out that the firm in question was no longer working for her campaign, though the manner in which she denied involvement in the rumor led some to suspect that she was intentionally engaging in a
whisper campaign
A whispering campaign or whisper campaign is a method of persuasion in which damaging rumors or innuendo are spread about the target, while the source of the rumors seeks to avoid being detected while they are spread. For example, a political camp ...
by deliberately repeating the rumor while denying it. O'Donnell later appeared on
Mark Levin
Mark Reed Levin (; born September 21, 1957) is an American broadcast news analyst, columnist, lawyer, political commentator, radio personality, and writer. He is the host of syndicated radio show '' The Mark Levin Show'', as well as '' Life, ...
's radio show, where she blasted Castle's "unmanly tactics" during the campaign, saying, "this is not a bake-off, put your man-pants on."
Kristen Murray, O'Donnell's 2008 campaign manager, starred in a Delaware Republican Party-funded
robocall
A robocall is a phone call that uses a computerized autodialer to deliver a pre-recorded message, as if from a robot. Robocalls are often associated with political and telemarketing phone campaigns, but can also be used for public service, emerge ...
in which she accused O'Donnell of misusing campaign funds.
Says Murray, "This is her third senate race in five years. As O'Donnell's manager, I found out she was living on campaign donations - using them for rent and personal expenses, while leaving her workers unpaid and piling up thousands in debt. She wasn't concerned about conservative causes. O'Donnell just wanted to make a buck."
O'Donnell denied most of what Murray said and stated that she had fired Murray.
With days to go before the primary, O'Donnell was bolstered by an endorsement from former
Governor of Alaska
A governor is an administrative leader and head of a polity or political region, in some cases, such as governors-general, as the head of a state's official representative. Depending on the type of political region or polity, a ''governor'' ma ...
and Republican vice presidential nominee
Sarah Palin
Sarah Louise Palin (; Heath; born February 11, 1964) is an American politician, commentator, and author who served as the ninth governor of Alaska from 2006 until her resignation in 2009. She was the 2008 Republican vice presidential nomi ...
. A few days later, ''
The Weekly Standard
''The Weekly Standard'' was an American neoconservative political magazine of news, analysis, and commentary that was published 48 times per year. Originally edited by founders Bill Kristol and Fred Barnes, the ''Standard'' was described as a ...
'' broke new details of O'Donnell's 2005 $6.95 million gender discrimination and wrongful termination lawsuit against her former employer, the conservative
Intercollegiate Studies Institute
The Intercollegiate Studies Institute (ISI) is a nonprofit educational organization that promotes conservative thought on college campuses. It was founded in 1953 by Frank Chodorov with William F. Buckley Jr. as its first president. It sponso ...
.
Castle was considered the favorite to prevail in the general election.
Polls that considered a matchup of Castle against Democrat Chris Coons indicated that Castle would defeat Coons by a significant margin.
In September, a poll by Public Policy Polling showed Castle leading Coons by a 10-point margin.
However, on September 14, O'Donnell won an upset victory over Castle in the Republican primary.
O'Donnell was considered far less electable in a general election than Castle; ''Politico'' reported, "The path to a Republican Senate takeover narrowed to the point of vanishing Tuesday night, as marketing consultant Christine O’Donnell upset Rep. Mike Castle in Delaware’s Senate primary and likely dashed the GOP’s hopes of capturing the seat in the process".
Results
General election
Candidates
*
Chris Coons
Christopher Andrew Coons (born September 9, 1963) is an American lawyer and politician serving as the Seniority in the United States Senate, senior United States Senate, United States senator from Delaware, a seat he has held since 2010. A member ...
(D)
*
Christine O'Donnell (R)
* Glenn Miller (I)
* James Rash (L)
Campaign
Incumbent U.S. Senator
Ted Kaufman opted not to seek election for the remainder of the term in 2010. Former
Lieutenant Governor
A lieutenant governor, lieutenant-governor, or vice governor is a high officer of state, whose precise role and rank vary by jurisdiction. Often a lieutenant governor is the deputy, or lieutenant, to or ranked under a governor — a "second-in-comm ...
John Carney and
State Attorney General
The state attorney general in each of the 50 U.S. states, of the District of Columbia, federal district, or of any of the Territories of the United States, territories is the chief legal advisor to the State governments of the United States, sta ...
Beau Biden
Joseph Robinette "Beau" Biden III (February 3, 1969 – May 30, 2015) was an American politician, lawyer, and officer in the Judge Advocate General's Corps, U.S. Army, Army Judge Advocate General's Corps from Wilmington, Delaware, Wilmingt ...
, both Democrats, opted not to seek the Senate seat, either. New Castle County Executive Chris Coons became the Democratic Party nominee by default,
as he did not face a primary challenge.
Following her upset victory in the Republican primary, O'Donnell continued to face a split reaction from the leaders in the local, state, and national Republican Party. Castle said he would not support O'Donnell.
The
National Republican Senatorial Committee
The National Republican Senate Committee (NRSC) is the Republican Hill committee for the United States Senate, working to elect Republicans to the Senate. The NRSC was founded in 1916 as the Republican Senatorial Campaign Committee. It was reor ...
similarly released a statement almost immediately following O'Donnell's primary win, stating that they would not spend money to support her or her campaign.
However, Texas Senator
John Cornyn
John Cornyn III ( ; born February 2, 1952) is an American politician, attorney, and former jurist serving as the Seniority in the United States Senate, senior United States Senate, United States senator from Texas, a seat he has held since 2002. ...
, chairman of the NRSC, released a statement later stating he did not know where the release from within his organization originated. He then offered the maximum $42,000 donation to her campaign; Cornyn acknowledged, however, that he was not sure if she could win.
Former
Governor of Massachusetts
The governor of the Commonwealth of Massachusetts is the head of government of the Commonwealth (U.S. state), Commonwealth of Massachusetts. The governor is the chief executive, head of the state cabinet and the commander-in-chief of the commonw ...
and future 2012 presidential nominee
Mitt Romney
Willard Mitt Romney (born March 12, 1947) is an American businessman and retired politician. He served as a United States Senate, United States senator from Utah from 2019 to 2025 and as the 70th governor of Massachusetts from 2003 to 2007 ...
also contributed to O'Donnell's general election funds.
However, former White House adviser and Republican strategist
Karl Rove
Karl Christian Rove (born December 25, 1950) is an American Republican political consultant, policy advisor, and lobbyist. He was Senior Advisor and Deputy Chief of Staff during the George W. Bush administration until his resignation on August ...
said following O'Donnell's primary victory, "This is not a race we're going to be able to win."
The morning following the primary,
Public Policy Polling
Public Policy Polling (PPP) is an American polling firm affiliated with the Democratic Party. Founded in 2001 by businessman Dean Debnam, the firm is based in Raleigh, North Carolina. Debnam died in 2024. Tom Jensen serves as the firm's directo ...
released a tweet indicating that their polling found that primary voters who voted for Mike Castle supported Coons, the Democratic opponent, over O'Donnell 44 percent to 28 percent in a general election. An October 16 report by CNN indicated that Coons was leading O'Donnell by double digits in polls.
In September 2010, comedian
Bill Maher
William MaherStated on ''Finding Your Roots'', January 12, 2016, PBS; on a series that lists "Jr." and "Sr." distinctions, Bill Maher's birth name was listed simply as William Maher, while his father was William Aloysius Maher Jr., and his pa ...
aired a 1999 clip of O'Donnell
in which O'Donnell said, "I dabbled into
witchcraft
Witchcraft is the use of Magic (supernatural), magic by a person called a witch. Traditionally, "witchcraft" means the use of magic to inflict supernatural harm or misfortune on others, and this remains the most common and widespread meanin ...
– I never joined a
coven
A coven () is a group or gathering of Witchcraft, witches. The word "coven" (from Anglo-Norman language, Anglo-Norman ''covent, cuvent'', from Old French ''covent'', from Latin ''conventum'' = convention) remained largely unused in English lan ...
. ... I hung around people who were doing these things... We went to a movie and then had a little midnight picnic on a satanic altar. And I didn't know it."
Her admission received widespread media coverage,
and O'Donnell explained that she had been referring to high school experiences.
During her campaign for the general election, O'Donnell followed up with a TV advertisement which featured her declaring, "I'm not a witch". This ad inspired many video parodies, most famously by comedian
Kristen Wiig
Kristen Carroll Wiig (; born August 22, 1973) is an American actress, comedian, screenwriter, and producer. First breaking through as a performer with the Los Angeles comedy troupe The Groundlings, Wiig achieved stardom in the late 2000s for her ...
on ''
Saturday Night Live
''Saturday Night Live'' (''SNL'') is an American Late night television in the United States, late-night live television, live sketch comedy variety show created by Lorne Michaels and developed by Michaels and Dick Ebersol that airs on NBC. The ...
''.
An October 19, 2010, debate between Coons and O'Donnell at
Widener University School of Law
Widener University Delaware Law School (Delaware Law School and formerly Widener University School of Law) is a private law school in Wilmington, Delaware. It is one of two separate ABA-accredited law schools of Widener University. Widener Un ...
featured an exchange about
separation of church and state in the United States
"Separation of church and state" is a metaphor paraphrased from Thomas Jefferson and used by others in discussions of the Establishment Clause and Free Exercise Clause of the First Amendment to the United States Constitution, which reads: "Congres ...
and whether it is explicitly in 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, on March 4, 1789. Originally including seven articles, the Constituti ...
. O'Donnell said it was not; afterward her campaign manager said, "Christine O'Donnell was not questioning the concept of separation of church and state as subsequently established by the courts. She simply made the point that the phrase appears nowhere in the Constitution." (That phrase was "substantively" read into the First Amendment in the
U.S. Supreme Court
The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all U.S. federal court cases, and over state court cases that turn on question ...
case ''
Engel v. Vitale
''Engel v. Vitale'', 370 U.S. 421 (1962), was a landmark United States Supreme Court case in which the Court ruled that it is unconstitutional for state officials to compose an official school prayer and encourage its recitation in public school ...
'' in 1962 and does not appear verbatim in the Constitution.)
Fundraising
Predictions
Polling
Results
By county
Counties that flipped from Democratic to Republican
*
Kent
Kent is a Ceremonial counties of England, ceremonial county in South East England. It is bordered by Essex across the Thames Estuary to the north, the Strait of Dover to the south-east, East Sussex to the south-west, Surrey to the west, and Gr ...
(largest city:
Dover
Dover ( ) is a town and major ferry port in Kent, southeast England. It faces France across the Strait of Dover, the narrowest part of the English Channel at from Cap Gris Nez in France. It lies southeast of Canterbury and east of Maidstone. ...
)
*
Sussex
Sussex (Help:IPA/English, /ˈsʌsɪks/; from the Old English ''Sūþseaxe''; lit. 'South Saxons'; 'Sussex') is an area within South East England that was historically a kingdom of Sussex, kingdom and, later, a Historic counties of England, ...
(largest city:
Seaford)
Aftermath
After O'Donnell's poor performance, there was considerable discussion within Republican circles regarding whether the party had lost a sure Senate seat by nominating her instead of Castle. Party pragmatists said that this was the case, pointing to other races
in Nevada and
Colorado
Colorado is a U.S. state, state in the Western United States. It is one of the Mountain states, sharing the Four Corners region with Arizona, New Mexico, and Utah. It is also bordered by Wyoming to the north, Nebraska to the northeast, Kansas ...
where Tea Party-favored candidates had lost races against Democratic rivals. For her own part, O'Donnell criticized divisions within the
Delaware Republican Party
The Republican State Committee of Delaware is the affiliate of the United States Republican Party in Delaware. It has five regional offices in Kent County, Western New Castle County, Central New Castle County, Northern New Castle County, and Su ...
following her primary win and said the consequent lack of support had led to her defeat.
Notes
References
External links
Delaware Commissioner of Elections*
Official candidate listings
U.S. Congress candidates for Delaware at
Project Vote Smart
Vote Smart, formerly called Project Vote Smart, is an American non-profit, non-partisan research organization that collects and distributes information on candidates for public office in the United States. It covers candidates and elected offic ...
Delaware U.S. Senate - Special Electionfrom OurCampaigns.com
Campaign contributionsfrom
Open Secrets
2010 Delaware Senate General Election: Christine O'Donnell (R) vs. Chris Coons (D)graph of multiple polls from Pollster.com
Election 2010: Delaware Senatefrom
Rasmussen Reports
Delaware Senate - Castle vs. Bidenfrom
Real Clear Politics
RealClearPolitics (RCP) is an American political news website and polling data aggregator. It was founded in 2000 by former options trader John McIntyre and former advertising agency account executive Tom Bevan. It features selected politi ...
2010 Delaware Senate Racefrom
CQ Politics
''Congressional Quarterly'', or ''CQ'', is an American publication that is part of the privately owned publishing company CQ Roll Call, which covers the United States Congress. ''CQ'' was formerly acquired by the U.K.-based The Economist Group, ...
Race profilefrom ''
The New York Times
''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of ...
''
Election 2010 at ''
The News Journal
''The News Journal'' is a daily newspaper in Wilmington, Delaware. It is headquartered in unincorporated New Castle County, Delaware, near New Castle, and is owned by Gannett.
History
The ancestry of the News Journal reflects the mergers of ...
''
Official candidate websites (Archived)
Mike Castle for U.S. SenateChris Coons for U.S. SenateChristine O'Donnell for U.S. SenateDelawareans for Miller for U.S. Senate
{{2010 United States elections
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 ...
Delaware
Delaware ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic and South Atlantic states, South Atlantic regions of the United States. It borders Maryland to its south and west, Pennsylvania to its north, New Jersey ...
2010
The year saw a multitude of natural and environmental disasters such as the 2010 Haiti earthquake, the Deepwater Horizon oil spill, and the 2010 Chile earthquake. The 2009 swine flu pandemic, swine flu pandemic which began the previous year ...
Delaware 2010
Delaware Senate (Class II)
United States Senate 2010