US midterm elections highlights: Senate incumbents including Democratic leader Chuck Schumer and senior Republican John Thune won re-election in Tuesday's US midterm elections, on a day Republicans were expected to wrest control of Congress away from President Joe Biden's Democrats. Thirty-five Senate seats and all 435 House of Representatives seats are on the ballot. Republicans are widely favoured to pick up the five seats they need to take over the House, but control of the Senate could come down to tight races in Pennsylvania, Nevada, Georgia, and Arizona. Three dozen governors' races are at stake as well; Florida Governor Ron DeSantis, a possible contender for the Republican presidential nomination in 2024, defeated Democratic Representative Charlie Crist, Edison Research projected. The final outcome, particularly control of the 50-50 Senate, is unlikely to be known any time soon. Democrats currently control that chamber through Vice President Kamala Harris' tie-breaking vote. More than 46 million Americans voted ahead of Election Day, either by mail or in person, according to data from the US Election Project, and state election officials caution that counting those ballots will take time. The Georgia race could end up in a December 6 runoff to determine which party holds the Senate.