United States Presidential election7 Nov 2028in 728 days Senate D 97% House D 58% Calendar Track record Research
PollingForecast.com United States
Closest results
United States · Election results history · 2018 Senate · Delaware
Election 2018 Results

Each election opens in its own mode: the forecast before the votes are counted, the live count while races are still too close to call, and the results once every race is decided.

2018 US Senate election in Delaware

Thomas R Carper (Democrat) beat Robert B Arlett (Republican) in Delaware in 2018, 60.0% to 37.8%, a margin of 22.1 points and 80,258 votes.

The Democratic hold continued from 2012, when Thomas R. Carper also won.

Democrats led in 2 of the 3 counties and Republicans in 1. The largest, New Castle, cast 210,323 votes and went to the Democrat by 40.8 points. The closest was Kent, where 4,072 votes separated the two parties.

United States
Results
2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958 1957 1956 1955 1954 1953 1952 1951 1950 1949 1948 1947 1946 1945 1944 1943 1942 1941 1940 1939 1938 1937 1936 1935 1934 1933 1932 1931 1930 1929 1928 1927 1926 1925 1924 1923 1922 1921 1920 1919 1918 1917 1916 1915 1914 1913 1912 1911 1910 1909 1908 1907 1906 1905 1904 1903 1902 1901 1900 1899 1898 1897 1896 1895 1894 1893 1892 1891 1890 1889 1888 1887 1886 1885 1884 1883 1882 1881 1880 1879 1878 1877 1876 1875 1874 1873 1872 1871 1870 1869 1868 1867 1866 1865
If only voted How this works
If the polls miss like

Early projection, based on early and incomplete polling: the likely matchups, each weighted by the betting markets' odds of both nominations, not a result. Each county is its 2024 presidential margin moved by its state's projected swing; set a national vote and every state, district and county moves by the same amount from our projection. Colours run in 100 steps from a safe Republican to a safe Democratic margin. Boundaries: US Census Bureau.

Senate

CandidatePartyVotesShare
Thomas R Carper won Democratic 217,385 60.0%
Robert B Arlett Republican 137,127 37.8%
All other candidates 8,080 2.2%
Total362,592

Every county

CountyDemocratRepublicanOthersTotalMargin
New Castle 145,428 69.1% 59,526 28.3% 5,369 210,323 D+40.8
Sussex 40,675 44.0% 50,391 54.5% 1,464 92,530 R+10.5
Kent 31,282 52.4% 27,210 45.5% 1,261 59,753 D+6.8

Margin: the Democrat's share of all votes minus the Republican's. Sources and how the results were checked.

Delaware Senate elections we hold

YearWinnerMargin
2024 Lisa Blunt Rochester (D) D+17.1
2020 Christopher A Coons (D) D+21.5
2018 Thomas R Carper (D) D+22.1
2014 Christopher A. Coons (D) D+13.6
2012 Thomas R. Carper (D) D+37.5
2008 Joseph R. Biden Jr. (D) D+29.4
2006 Tom Carper (D) D+39.7
2002 Joseph R. Biden Jr. (D) D+17.4
2000 Thomas R. Carper (D) D+11.8
1996 Joseph R. Biden Jr. (D) D+21.9
1994 William V. Roth, Jr. (R) R+13.3
1990 Joseph R. Biden Jr. (D) D+26.8
1988 William V. Roth, Jr. (R) R+24.1
1984 Joseph R. Biden Jr. (D) D+20.2
1982 William V. Roth, Jr. (R) R+11.0
1978 Joseph R. Biden Jr. (D) D+16.9
1976 William V. Roth, Jr. (R) R+12.2
1972 Joe Biden (D) D+1.4
1970 William Roth (R) R+18.7
1966 J. Caleb Boggs (R) R+18.2
1964 John J. Williams (R) R+3.5
1960 J. Caleb Boggs (R) R+1.4
1958 John Williams (R) R+6.6
1954 J. Allen Frear Jr. (D) D+13.9
1952 John J. Williams (R) R+9.0
1948 J. Allen Frear Jr. (D) D+2.6
1946 John J. Williams (R) R+10.3
1942 Clayton D. Buck (R) R+9.2
1940 James M. Tunnell (D) D+3.3
1936 James H. Hughes (D) D+11.6
1934 John G. Townsend Jr. (R) R+7.1
1930 Daniel O. Hastings (R) R+9.1
1928 John G. Townsend Jr. (R) R+21.9
1924 T.Coleman du Pont (R) R+18.7
1922 Thomas F. Bayard Jr. (D) D+0.4
1918 L. Heisler Ball (R) R+3.3
1916 Josiah O. Wolcott (D) D+4.9