US election results explained with data: margins, swings, turnout, bellwether counties and the Senate, House and governor races.
Among 331 counties with 100,000+ votes, Hidalgo, Texas, shifted 43.3 points toward Republicans from 2016 to 2024 and Henry, Georgia, 25.3 toward Democrats.
As of October 12, 2026, Republicans held majorities in 57 state legislative chambers and Democrats in 39; 88 chambers are on the November 3 ballot.
In 2024, 4 states and 52 counties backed one party for president and the other for US Senate, up from 1 state in 2020 and none in 2016.
Wisconsin was the closest state in 2024 at R+0.9, then Michigan and Pennsylvania. All ten closest states moved toward Republicans from 2020.
Only Blaine County, Montana, voted for every presidential winner from 2000 to 2024; 5 counties matched every popular-vote winner.
Turnout fell from 67.7% of voting-age citizens in 2020 to 46.9% in the 2022 midterm in 39 states, a drop of 20.8 points, DataPorium data show.
31 large counties in 2026 Senate and governor states changed party since 2016 or were within 3 points in 2024. Here are their margins.
35 Senate seats are on the November 3, 2026 ballot: 33 regular and 2 special elections. See who holds each seat and its last margin.
In the 12 midterms from 1978 to 2022 the president's party lost House seats 10 times, an average of 21 seats; it gained only in 1998 and 2002.
Nine states use new House maps on November 3, 2026, covering 173 seats. Missouri and Virginia redraws are not in effect, as of October 13, 2026.
California's 13th was 2024's closest House race, won by 187 votes. As of October 13, 2026, Republicans hold 218 seats; a majority needs 218.
Ohio and Florida hold Senate special elections on November 3, 2026 for terms ending in 2029. Here are the candidates and each state's results since 2016.
36 states elect governors on November 3, 2026, 18 held by each party, and 19 seats are open. See each state's governor and last margin.