A recent controversy over a Missouri Senate candidate's comments on rape has not diminished U.S. Senator Mitch McConnell's outlook for November.
McConnell is hoping to become majority leader next year. Depending on who wins the presidency, he needs either three of four GOP Senate victories this fall to do so. He recently asked Republican Congressman Todd Akin to drop out of his race to give Republicans a better chance in Missouri, but Akin declined.
McConnell says even with Missouri in question, the GOP may still have a shot at the majority.
"I think it's a 50-50 proposition. I think the Senate is going to be close and the presidential race is going to be close and I think all these races are yet to play out between now and November," he says.
Democrats have more seats nationwide to defend this fall than Republicans do.
The other battleground states are Florida, Ohio, Montana and Massachusetts.