
House Speaker John A. Boehner is bringing his chamber's agriculture bill to the floor. House and Senate versions end direct payments to farmers in favor of broader crop insurance programs. (Associated Press)

In 2010, Virginia Republican E. Scott Rigell won a House seat after spending $2.6 million of his own money. (Associated Press)

Former South Carolina Govs. Mark Sanford (left) and Jim Edwards and state Rep. Chip Limehouse, who lost to Sanford in the March primary for the state's open House seat, speak with voters during a campaign stop at a diner in Mount Pleasant, S.C., on May 6, 2012. Sanford faces Elizabeth Colbert Busch, the sister of comedian Stephen Colbert, in a special congressional election in the state's 1st District. (Associated Press)

Former South Carolina Govs. Mark Sanford (left) and Jim Edwards and state Rep. Chip Limehouse, who lost to Sanford in the March primary for the state's open House seat, speak with voters during a campaign stop at a diner in Mount Pleasant, S.C., on May 6, 2012. Sanford faces Elizabeth Colbert Busch, the sister of comedian Stephen Colbert, in a special congressional election in the state's 1st District. (Associated Press)

Support from within the GOP has given Mark Sanford's campaign a boost ahead of Tuesday's special election for an open House seat that many analysts say is too close to call. He must overcome distrust engendered by his affair while governor of South Carolina in 2009.

Former South Carolina Gov. Mark Sanford, who is the Republican candidate for the state's open House seat, held a "debate" Wednesday in Charleston, S.C., with a life-size poster-photo of House Speaker Nancy Pelosi because Mr. Sanford says his Democrat opponent, Elizabeth Colbert Busch, has refused to agree to multiple debates. (Courtesy of marksanford.com)

Former South Carolina Gov. Mark Sanford, who is the Republican candidate for the state's open House seat, held a "debate" Wednesday in Charleston, S.C., with a life-size poster-photo of House Speaker Nancy Pelosi because Mr. Sanford says his Democrat opponent, Elizabeth Colbert Busch, has refused to agree to multiple debates. (Courtesy of marksanford.com)

Teddy Turner, the conservative son of liberal media mogul Ted Turner, is one of 16 Republicans vying for an open House seat from South Carolina. The party primary is set for March 19. (TEDDY TURNER FOR CONGRESS)

Vice President Joseph R. Biden watches at left as Sen. Charles Schumer, D-N.Y., center, shakes hands with House Speaker John Boehner of Ohio, right, in the House Chamber during the counting of Electoral College votes on Capitol Hill in Washington, Friday, Jan. 4, 2013. Biden presided over a Joint Session of Congress Friday as four members of the House and Senate took turns announcing the votes that had been tallied in state capitals last month affirming the re-election of Barack Obama as President of the United States. (AP Photo/Susan Walsh)