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 ...

's 1st Senate district is one of 21 districts in the

Delaware Senate The Delaware State Senate is the upper house of the Delaware General Assembly, the state legislature of the U.S. state of Delaware. It is composed of 21 Senators, each of whom is elected to a four-year term, except when reapportionment occur ...

. It has been represented by

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 (Cyprus) (DCY) **Democratic Part ...

Dan Cruce since 2025, succeeding Democrat

Sarah McBride Sarah Elizabeth McBride (born August 9, 1990) is an American activist and politician who is the United States House of Representatives, U.S. representative for Delaware's at-large congressional district. A member of the Democratic Party (United ...

who resigned after being elected to the

U.S. House of Representatives The United States House of Representatives is a chamber of the 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 Article One of th ...

Geography

District 1 covers the northeastern tip of

New Castle County New Castle County is the northernmost of the three counties of the U.S. state of Delaware (New Castle, Kent, and Sussex). As of the 2020 census, the population was 570,719, making it the most populous county in Delaware, with nearly 60% of the ...

along the

Delaware River The Delaware River is a major river in the Mid-Atlantic region of the United States and is the longest free-flowing (undammed) river in the Eastern United States. From the meeting of its branches in Hancock, New York, the river flows for a ...

, including

Claymont Claymont is a census-designated place (CDP) in New Castle County, Delaware, United States. As of the 2020 U.S. census, the population of Claymont was 9,895. History The community now known as Claymont started on the banks of Naamans Creek where i ...

, Bellefonte, most of Edgemoor, and parts of northern Wilmington. Like all districts in the state, the 1st Senate district is located entirely within Delaware's at-large congressional district. It overlaps with the 1st, 3rd, 4th, 6th, 7th, and 10th districts of the

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 ...

. The district borders

New Jersey New Jersey is a U.S. state, state located in both the Mid-Atlantic States, Mid-Atlantic and Northeastern United States, Northeastern regions of the United States. Located at the geographic hub of the urban area, heavily urbanized Northeas ...

via the Delaware River and

Pennsylvania Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state, state spanning the Mid-Atlantic (United States), Mid-Atlantic, Northeastern United States, Northeastern, Appalachian, and Great Lakes region, Great Lakes regions o ...

via the

Twelve-Mile Circle The Twelve-Mile Circle is an approximately circular arc that forms most of the boundary between Delaware and Pennsylvania. It is a combination of different circular arcs that have been feathered together. It is nominally a circle with a variab ...

Recent election results

Delaware Senators are elected to staggered four-year terms. Under normal circumstances, the 1st district holds elections in presidential years, except immediately after redistricting, when all seats are up for election regardless of the usual cycle.

Geography

Recent election results

2020

2016

2012

Federal and statewide results

References