Democrats won control of the US Senate in the 3 November 2026 election, according to the Associated Press; BBC News shows Democrats on 54 seats and Republicans on 43 with three races left, so Republicans cannot reach 50.
History. 6 of 9. Past leads ran from 0 to 12 seats; today it is 6, so a net loss of four ends control. The seats question below points the other way: losing five or more would end Republican control.
Hunch. Democrats need a net gain of only four seats, and in past midterms like this the president's party either gained seats or lost five or more, which would end Republican control.
The control market resolves on Associated Press results and the Senate's party division after the election: YES if Republicans, with independents who vote with them, hold 51 seats or more, or 50 with the vice-president's deciding vote, and NO if Democrats have the majority. If control is not settled on election night it resolves on the date the AP declares it, with Reuters and The Guardian as the backup.
We looked for cases where the president's party ran the Senate going into a midterm, with a lead of 12 seats or fewer and the president's approval under 50% or not yet measured. We found nine since 1914. The party kept control six times and lost it three times.