Former South Dakota GOP Gov. Mike Rounds is suddenly in a tough battle for an open Senate seat after Democrats and the Mayday PAC said they will spend $1 million each to defeat him.
Republican strategist Karl Rove's Crossroads GPS group is planning to spend at least $23 million in key Senate races in the final two months of the campaign. The group is a tax-exempt non-profit and is allowed to keep the names of its donors secret.
Rep. Nick Rahall, D-W.Va., (right) poses with House Speaker John Boehner at the start of his 19th term last year. Rahall is running for re-election in a district that President Obama lost by 32 points in 2012.
J. Scott Applewhite/AP
Rhode Island Democratic gubernatorial nominee Gina Raimondo waves as she takes the stage to address supporters during a primary election night watch party Tuesday in Pawtucket.
NHPRThe former Republican senator from Massachusetts will face Democratic incumbent Jeanne Shaheen in November. If Brown wins, he would become only the third U.S. senator to represent more than one state.
Scott Brown, right, a former U.S. Senator from Massachusetts, waves to supporters as his wife Gail, left, claps after he won New Hampshire's Republican U.S. Senate primary on Tuesday in Concord, N.H.