Incumbent: Six-term Republican Sen. Thad Cochran was forced into a runoff election for his Senate seat after the recent Mississippi primary failed to result in a clear winner to become the GOP's nominee in November. (Associated Press)
Sen. Mark Udall, Colorado Democrat, is still embracing President Obama and refusing to support to the Keystone XL pipeline, even though he is running neck and neck with his GOP challenger. (Associated Press)
In toppling House Majority Leader Eric Cantor, Dave Brat, above, showed Virginia GOP primary voters "his candidacy was relevant to their lives," says Raynard Jackson. (AP Photo/Richmond Times-Dispatch, P. Kevin Morley)
South Carolina Republican Sen. Tim Scott speaks with reporters in North Charleston, S.C., on Tuesday, June 10, 2014, after winning the GOP primary with over 90 percent of the vote. (AP Photo/Bruce Smith)
Denver Broncos quarterback Peyton Manning will join Sen. Rand Paul and other GOP heavyweights at Mitt Romney's upcoming leadership summit. (Associated Press)
Cabinet Aide to Florida's CFO Chelsi Henry is intrudeced as one of the GOP's rising stars at the Republican National Committee's annual winter meeting, Washington, D.C., Thursday, January 23, 2014. (Andrew Harnik/The Washington Times)
Senate Armed Services Committee member Sen. John McCain, Arizona Republican and three other GOP senators introduced bill Tuesday that would give veterans more flexibility to see a private doctor if they are forced to wait too long for an appointment at a Veterans Affairs hospital or clinic.
A large crowd was in in attendance at the debate among candidates for the GOP nomination for U.S. House on Wednesday evening, May 28, 2014, at the Red Lion Hotel in Kalispell, Mont. (AP Photo/The Daily Inter Lake, Patrick Cote)