Because it's a secret vote, we don't know exactly who voted for Thune to be the Senate Majority Leader, but we know a few of his public supporters.

President-elect Donald Trump congratulated Sen. John Thune on winning election to the role of Senate majority leader, declaring that the lawmaker "will do an outstanding job."

Kentucky Sen. Mitch McConnell announced he would step down from his leadership post earlier this year, ending his historic run.