
South Carolina Republican politics: Sen. Tim Scott, Gov. Nikki Haley and former senator Jim DeMint. (photo from South Carolina Republican Party)

** FILE ** Jim DeMint resigned from his U.S. Senate seat representing South Carolina to take leadership at the Heritage Foundation, a conservative Washington-based think tank. (Associated Press)

** FILE ** Then-Sen. Jim DeMint, South Carolina Republican, addresses the Conservative Political Action Conference (CPAC) in Washington on Thursday, Feb. 18, 2010. (AP Photo/Cliff Owen)

The Senate Conservatives Fund, founded by then-Sen. Jim DeMint (left) in 2008, is already criticizing the Conservative Victory Project, a new super PAC organized by American Crossroads, the sleek 2012 fundraising machine that boasted Karl Rove as point man. (Associated Press)

The Senate Conservatives Fund, founded by then-Sen. Jim DeMint (left) in 2008, is already criticizing the Conservative Victory Project, a new super PAC organized by American Crossroads, the sleek 2012 fundraising machine that boasted Karl Rove as point man. (Associated Press)

** FILE ** In this June 17, 2011 photo, Sen. Jim DeMint, South Carolina Republican, speaks in New Orleans. DeMint announced Dec. 6, 2012, that he is resigning to take over at Heritage Foundation. (AP Photo/Patrick Semansky)

U.S. Rep. Tim Scott, left, speaks during a news conference as South Carolina Gov. Nikki Haley and Sen. Jim DeMint look on at the Statehouse on Monday, Dec. 17, 2012, in Columbia, S.C. Scott was named as DeMint's replacement in the U.S. Senate. (AP Photo/Rainier Ehrhardt)

U.S. Rep. Tim Scott, left, speaks during a news conference as South Carolina Gov. Nikki Haley and Sen. Jim DeMint look on at the Statehouse on Monday, Dec. 17, 2012, in Columbia, S.C. Scott was named as DeMint's replacement in the U.S. Senate. (AP Photo/Rainier Ehrhardt)

** FILE ** In this June 17, 2011 photo, Sen. Jim DeMint, South Carolina Republican, speaks in New Orleans. DeMint announced Dec. 6, 2012, that he is resigning to take over at Heritage Foundation. (AP Photo/Patrick Semansky)