He seemed to stumble when describing the geography of the state he hopes to represent.
The Reagan Library in California has announced it will host candidates next year.
McConnell holds a five-point lead over his Democratic challenger.
Sen. Jeanne Shaheen and challenger Scott Brown sparred over issues dominating campaign.
“This is the last election cycle in which I’m involved as president," he reflects.
Whatever outcome you want to see on Nov. 4, there's a poll for that.
Rep. Steven Horsford is hoping the president can help him turn out the Democratic base.
Clinton praised another potential challenger, Sen. Elizabeth Warren (D-Mass.), last week.
Possible legal challenges could impact race between Michelle Nunn (D) and David Perdue (R).
Walsh dropped out of Montana's Senate race and his degree was later revoked.