Republicans won the Senate. But there’s one more big political prize to be awarded after Tuesday’s election: the House of Representatives, which could still break either way depending on what happens in the roughly 28 races that remain too close to call as of Thursday afternoon.

Republicans currently hold the majority in the House, while Democrats have the Senate. A handful of tight matchups could swing the balance of power.

Republicans look poised to win control of the U.S. Senate while Democrats could take the House as voters across the nation cast ballots Tuesday. Early results gave Republicans an edge, as West Virginia Gov.