House Speaker John Boehner, R-Ohio, joined by House Majority Leader Eric Cantor, R-Va., speaks to reporters about the "fiscal cliff" negotiations at the Capitol on Friday. J. Scott Applewhite/AP hide caption

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House Speaker John Boehner pauses during a news conference Thursday. House GOP leaders abruptly canceled a vote on his measure after they failed to round up enough votes for it to pass. Jacquelyn Martin/AP hide caption

itoggle caption Jacquelyn Martin/AP

Rep. Tim Huelskamp, R-Kan., shown in 2010, has said he would deserve a primary challenge if he voted for House Speaker John Boehner's "fiscal cliff" proposal, which would extend the Bush-era tax cuts only on income of less than $1 million. John Hanna/AP hide caption

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House Speaker John Boehner appears at a news conference after a House Republican conference meeting Wednesday on Capitol Hill. Alex Wong/Getty Images hide caption

itoggle caption Alex Wong/Getty Images