This is chilling!:stups: Which party controls the Senate if there is a 50-50 tie? Article I, Section 3 of the Constitution specifies that The Vice President is the President of the Senate. The Vice President has no vote unless to break a tie in some matter before the Senate. Therefore, if the election leads to a 50-50 party split in the Senate, the Vice-President's vote will give the majority to his or her party. Since this is a presidential election year, an interesting event will occur if the Senate does end up tied after the 2008 election. Since the new Senate will be sworn in about 2 1/2 weeks before the new President and Vice-President (the latter pair take the oath of office on January 20th), the Republicans would technically be the majority party in that interim period. If the new Vice-President is a Democrat, the majority would then revert back to the Democrats after the 20th. This actually happened in 2001, with the two parties agreeing on a power-sharing arrangement during those interim weeks before George Bush and Dick Cheney were inaugurated.