Rep. Paul Ryan, R- Wis., at a news conference following a meeting of House Republicans on Tuesday night. Ryan says he will run for House speaker if the disparate GOP factions can get behind him. Andrew Harnik/AP hide caption

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House Majority Leader Kevin McCarthy, R-Calif., speaks at a news conference in July, as Speaker John Boehner looks on. McCarthy announced Monday he would run to replace Boehner, who is resigning. Mark Wilson/Getty Images hide caption

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Pressure is building within House Speaker John Boehner's conference to oust him. Boehner is likely to hold off a challenge — for now. But he could decide to call it quits at the end of this term. Susan Walsh/AP hide caption

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House Speaker John Boehner is yet again facing a backlash from conservatives over his approach in trying to avoid a government shutdown. Jacquelyn Martin/AP hide caption

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Actress Melissa Gilbert arrives at the Award of Excellence Star presentation for the Screen Actors Guild in 2007. Gilbert is trying to win a congressional seat from Michigan, where her husband is from. Noel Vasquez/Getty Images hide caption

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