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Rep. Paul Ryan, R-Wis., may have won enough support to become the next House speaker, but he still has a long road ahead of him, the Washington Post editorial board warned this week.

Now he actually has to lead.

"We wish him luck," the board wrote. "Yet he faces several grave challenges, some self-imposed. Top among them is that Mr. Ryan promised hard-right members of Congress that he would respect the informal 'Hastert Rule,' which requires that a majority of the majority party in the House favor a bill for it to get a floor vote."

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