'Buckle up!' A Democratic Senate could help advance Biden’s agenda. Here are some top policy items USA TODAY staff, USA TODAY Biden warns of high stakes in Georgia Senate races Replay Video UP NEXT Democrats on Wednesday won control of the U.S. Senate, giving them majorities in both houses of Congress and the presidency. Raphael Warnock beat Republican Sen. Kelly Loeffler and Democrat Jon Ossoff bested Republican Sen. David Perdue in Georgia’s two runoff elections. Those victories give Democrats 50 seats in the Senate, , which would effectively give them control because Vice President-elect Kamala Harris represents the tie-breaking vote.