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Notes

November 5, 2026, by Eric Ness

Democrats flipped four Senate seats Republicans had held for decades, one of them since 1919

Democrats flipped seven Senate seats on Tuesday, CBS News projects, enough for at least 54 seats and control of the chamber. Two more Republican seats are too close to call. Scott Colom led in Mississippi by 1,138 votes and Mary Peltola led in Alaska by 637 as of Wednesday night.

This site has every Senate race since 1976, so I looked up how long each of those seats had been out of Democratic hands. A state’s two seats have separate histories, so the chart follows the seat that was on the ballot this year.

Republicans had won four of these seats in every election since 1978, and a fifth is still being countedThe Senate seats Democrats flipped or led in on November 3, 2026, with the party that won each earlier election for the same seat.
KansasRepublican since 1919788490960208142026
TexasRepublican since 1961788490960208142026
South CarolinaRepublican since 1964788490960208142026
MaineRepublican since 1979788490960208142026
Ohio, special election808692980410162226
Iowa788490960208142026
North Carolina788490960208142026
Mississippi, not calledRepublican since 1978788490960208141820?
Alaska, not called7884909602081420?
  • Democrat won
  • Republican won
  • Not called yet
Indicator: Party of the winner of each general election for the seat on the 2026 ballot, 1978 to 2022, special elections included. 2026 is unofficial: CBS News projections, and the Mississippi and Alaska counts as of November 4. "Republican since" is when a Republican took the seat, before the data starts.Source: MIT Election Data and Science Lab, U.S. Senate statewide 1976–2024 (CC0), via electiondata.dev senate-results, version 2026-10-25.247421eda6. 2026: CBS News. Republican since: U.S. Senate, senators by state; South Carolina, Wikipedia
Show the numbers (9 rows)
Earlier elections for the seat, oldest first2026
Kansas (Republican since 1919)1978 R, 1984 R, 1990 R, 1996 R, 2002 R, 2008 R, 2014 R, 2020 RD
Texas (Republican since 1961)1978 R, 1984 R, 1990 R, 1996 R, 2002 R, 2008 R, 2014 R, 2020 RD
South Carolina (Republican since 1964)1978 R, 1984 R, 1990 R, 1996 R, 2002 R, 2008 R, 2014 R, 2020 RD
Maine (Republican since 1979)1978 R, 1984 R, 1990 R, 1996 R, 2002 R, 2008 R, 2014 R, 2020 RD
Ohio, special election1980 D, 1986 D, 1992 D, 1998 R, 2004 R, 2010 R, 2016 R, 2022 RD
Iowa1978 R, 1984 D, 1990 D, 1996 D, 2002 D, 2008 D, 2014 R, 2020 RD
North Carolina1978 R, 1984 R, 1990 R, 1996 R, 2002 R, 2008 D, 2014 R, 2020 RD
Mississippi, not called (Republican since 1978)1978 R, 1984 R, 1990 R, 1996 R, 2002 R, 2008 R, 2014 R, 2018 special R, 2020 Rnot called
Alaska, not called1978 R, 1984 R, 1990 R, 1996 R, 2002 R, 2008 D, 2014 R, 2020 Rnot called

In Kansas, Texas, South Carolina and Maine, Republicans won all eight elections for this seat from 1978 to 2020. Mississippi would make five states. Republicans won all nine there, counting a special election in 2018.

The site’s data starts in 1976, but the Senate’s own lists show these streaks are older. Kansas’s seat had been Republican since 1919, the longest of the five, and NPR reports that the state hadn’t elected a Democrat to either seat since 1932. Texas’s seat had been Republican since 1961, when John Tower won a special election after Lyndon Johnson became vice president. South Carolina’s had been Republican since 1964, though no Democrat lost it that year. Strom Thurmond, who had won it as a Democrat, changed parties. Mississippi’s has been Republican since 1978 and Maine’s since 1979.

Following the seat changes some answers. Texas and Maine both elected a Democrat in 1988, but Lloyd Bentsen and George Mitchell held the states’ other seats. Ohio elected Sherrod Brown in 2018, also to the other seat, and he lost it in 2024. This year’s Ohio race was a special election for the seat JD Vance left, and a Democrat last won that one in 1992.

The 2026 results are unofficial, and the two open races could go either way. The streaks count elections, so appointed senators such as Jon Husted and Darline Graham don’t appear in them. And none of this says why these seats moved or whether they’ll stay. Brown has to run again in 2028.

References