Republican Party

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Former Florida Gov. Jeb Bush has kept his cards close to vest, leaving it to Republican Party insiders and political pundits to try to decipher whether he has his sights set on the White House. (Associated Press)

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Republican National Committee Chairman Reince Priebus has received credit for making changes necessary to help the GOP win a special congressional election in Florida last week. (Associated Press)

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Republican U.S. Senate candidate Richard Cash, center, signs an agreement to support any challenger who gets into a runoff with U.S. Sen. Lindsey Graham in June as he stands on the steps of the Statehouse, Thursday, March 13, 2014, in Columbia, S.C. Six GOP candidates have said they want to take on Graham as he seeks a third term. (AP Photo/Jeffrey Collins)

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Republican U.S. Senate candidate Dave Feliciano speaks after signing an agreement to support any challenger who gets into a runoff with U.S. Sen. Lindsey Graham in June, on the steps of the Statehouse Thursday, March 13, 2014, in Columbia, S.C. Six GOP candidates have said they want to take on Graham as he seeks a third term. (AP Photo/Jeffrey Collins)

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Republican U.S. Senate candidate Bill Connor speaks after signing an agreement to support any challenger who gets into a runoff with U.S. Sen. Lindsey Graham in June, on the steps of the Statehouse, Thursday, March 13, 2014, in Columbia, S.C. Six GOP candidates have said they want to take on Graham as he seeks a third term. (AP Photo/Jeffrey Collins)

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Republican U.S. Senate candidate Richard Cash speaks after signing an agreement to support any challenger who gets into a runoff with U.S. Sen. Lindsey Graham in June, on the steps of the Statehouse, Thursday, March 13, 2014, in Columbia, S.C. Six GOP candidates have said they want to take on Graham as he seeks a third term. (AP Photo/Jeffrey Collins)

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Republican U.S. Senate candidate Lee Bright speaks after signing an agreement to support any challenger who gets into a runoff with U.S. Sen. Lindsey Graham in June, on the steps of the Statehouse, Thursday, March 13, 2014, in Columbia, S.C. Six GOP candidates have said they want to take on Graham as he seeks a third term. (AP Photo/Jeffrey Collins)

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Kansas state Sen. Jake LaTurner, left, a Pittsburg Republican, talks to state GOP Chairman Kelly Arnold, center, and Heath Kohl, right, the state GOP's political director, during the Senate's debate on a bill making it harder for voters to switch parties before primary elections, Wednesday, March 12, 2014, at the Statehouse in Topeka, Kan. The state GOP backs the measure, which has gone to Republican Gov. Sam Brownback. (AP Photo/John Hanna)

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Sens. Ted Cruz and Rand Paul share the stage on behalf of the Republican Party. Both will speak on conservative strengths at an upcoming summit. (Associated Press)

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Sens. Jack Reed, Rhode Island Democrat, (left) and Dean Heller, Nevada Republican, were working together on a bipartisan bill in last year to restore unemployment benefits that fell one vote short of overcoming a GOP-led filibuster. (Associated Press)