# List of United States Senate elections in Delaware

A table showing the results of popular elections for U.S. senators from Delaware, beginning in 1916 when the Seventeenth Amendment to the U.S. Constitution, providing for the popular election of for U.S. senators, went into effect. Before 1914, they were elected by the Delaware General Assembly.
Elections are held the first Tuesday after November 1. United States senators are popularly elected for a six-year term beginning January 3. Before 1935, terms began March 4.

## List of recent elections
### Class 1 senators

| Year | Elected | Party | Votes | % | Opponent | Party | Votes | % |
| 1916 | Josiah O. Wolcott | Democratic | 25,434 | 50% | Henry A. du Pont* | Republican | 22,925 | 45% |
| 1922 (special) | Thomas F. Bayard Jr. | Democratic | 36,954 | 50% | T. Coleman du Pont* | Republican | 36,894 | 50% |
| 1922 | Thomas F. Bayard Jr. | Democratic | 37,304 | 50% | T. Coleman du Pont* | Republican | 36,979 | 49% |
| 1928 | John G. Townsend Jr. | Republican | 63,725 | 61% | Thomas F. Bayard Jr.* | Democratic | 40,828 | 39% |
| 1934 | John G. Townsend Jr.* | Republican | 52,829 | 53% | Wilbur L. Adams | Democratic | 45,771 | 46% |
| 1940 | James M. Tunnell | Democratic | 68,294 | 51% | John G. Townsend Jr.* | Republican | 63,799 | 47% |
| 1946 | John J. Williams | Republican | 62,603 | 55% | James M. Tunnell* | Democratic | 50,910 | 45% |
| 1952 | John J. Williams* | Republican | 93,020 | 54% | Alexis I. du Pont Bayard | Democratic | 77,685 | 46% |
| 1958 | John J. Williams* | Republican | 82,280 | 53% | Elbert N. Carvel | Democratic | 72,152 | 47% |
| 1964 | John J. Williams* | Republican | 103,782 | 52% | Elbert N. Carvel | Democratic | 96,850 | 48% |
| 1970 | William Roth | Republican | 94,979 | 59% | Jacob W. Zimmerman | Democratic | 64,740 | 40% |
| 1976 | William Roth* | Republican | 125,454 | 56% | Thomas C. Maloney | Democratic | 98,042 | 44% |
| 1982 | William Roth* | Republican | 105,357 | 55% | David N. Levinson | Democratic | 84,413 | 44% |
| 1988 | William Roth* | Republican | 151,115 | 62% | Shien Biau Woo | Democratic | 92,378 | 38% |
| 1994 | William Roth* | Republican | 111,074 | 56% | Charles M. Oberly | Democratic | 84,540 | 42% |
| 2000 | Tom Carper | Democratic | 181,566 | 56% | William Roth* | Republican | 142,891 | 44% |
| 2006 | Tom Carper* | Democratic | 170,567 | 67% | Jan C. Ting | Republican | 69,734 | 27% |
| 2012 | Tom Carper* | Democratic | 265,374 | 66% | Kevin Wade | Republican | 115,694 | 29% |
| 2018 | Tom Carper* | Democratic | 217,385 | 60% | Rob Arlett | Republican | 137,127 | 38% |
| 2024 | Lisa Blunt Rochester | Democratic | 283,298 | 57% | Eric Hansen | Republican | 197,753 | 39% |

### Class 2 senators

| Year | Elected | Party | Votes | % | Opponent | Party | Votes | % |
| 1918 | L. Heisler Ball | Republican | 21,519 | 51% | Willard Saulsbury Jr. | Democratic | 20,113 | 48% |
| 1924 | T. Coleman du Pont | Republican | 52,731 | 59% | James M. Tunnell | Democratic | 36,085 | 41% |
| 1930 | Daniel O. Hastings* | Republican | 47,909 | 54% | Thomas F. Bayard Jr. | Democratic | 39,881 | 45% |
| 1936 | James H. Hughes | Democratic | 67,136 | 53% | Daniel O. Hastings* | Republican | 52,469 | 41% |
| 1942 | C. Douglass Buck | Republican | 46,210 | 54% | E. Ennalls Berl | Democratic | 38,322 | 45% |
| 1948 | J. Allen Frear Jr. | Democratic | 71,888 | 51% | C. Douglass Buck* | Republican | 68,246 | 48% |
| 1954 | J. Allen Frear Jr.* | Democratic | 82,511 | 57% | Herbert B. Warburton | Republican | 62,389 | 43% |
| 1960 | J. Caleb Boggs | Republican | 98,874 | 51% | J. Allen Frear Jr.* | Democratic | 96,090 | 49% |
| 1966 | J. Caleb Boggs* | Republican | 97,268 | 59% | James M. Tunnell Jr. | Democratic | 67,263 | 41% |
| 1972 | Joe Biden | Democratic | 116,006 | 50% | J. Caleb Boggs* | Republican | 112,844 | 49% |
| 1978 | Joe Biden* | Democratic | 93,930 | 58% | James H. Baxter Jr. | Republican | 66,479 | 41% |
| 1984 | Joe Biden* | Democratic | 147,831 | 60% | John M. Burris | Republican | 98,101 | 40% |
| 1990 | Joe Biden* | Democratic | 112,918 | 63% | M. Jane Brady | Republican | 64,554 | 36% |
| 1996 | Joe Biden* | Democratic | 165,465 | 60% | Raymond J. Clatworthy | Republican | 105,088 | 38% |
| 2002 | Joe Biden* | Democratic | 135,253 | 58% | Raymond J. Clatworthy | Republican | 94,793 | 41% |
| 2008 | Joe Biden* | Democratic | 257,539 | 65% | Christine O'Donnell | Republican | 140,595 | 35% |
| 2010 (special) | Chris Coons | Democratic | 174,012 | 57% | Christine O'Donnell | Republican | 123,053 | 40% |
| 2014 | Chris Coons* | Democratic | 130,655 | 56% | Kevin Wade | Republican | 98,823 | 42% |
| 2020 | Chris Coons* | Democratic | 291,804 | 59% | Lauren Witzke | Republican | 186,054 | 38% |