The nine key races that will decide who controls the Senate, and where they stand

Democrats need four Senate seats to win control in 2026 midterms as polls show tight races

With Republicans holding a 53-47 Senate majority, Democrats need to flip at least four seats in the November 2026 midterm elections to gain control. While initially seen as unlikely, President Trump's unpopularity and voter concerns over the Iran war and rising prices have made Democratic gains more plausible, with forecasters giving them a three in four chance of winning the Senate.