The Club for Growth on Thursday endorsed a GOP challenger to Republican Sen. Thad Cochran of Mississippi, who has yet to decide whether he will seek re-election next year. Tea party groups are also supporting the conservative challenger to Senate Minority Leader Mitch McConnell in Kentucky while backing like-minded candidates in North Carolina, South Carolina and Tennessee.
Sen. Kelly Ayotte, R-N.H., said she hopes her party would move toward "common-sense problem solvers" in the future.
"I don't want to go down this road again," she said in an interview with The Associated Press, noting that she disagreed with congressional conservatives' tactics during the budget fight. "What we take from this experience is that there are obviously common-sense problem solvers, and that's where the party needs to be."
Iowa Republican Gov. Terry Branstad is among those pushing for mainstream Republicans to play a more significant role in party politics.
"We don't have leadership in Washington, D.C.," Branstad said of his party, making an exception for Wisconsin Rep. Paul Ryan, who is helping lead bipartisan budget talks and headlining a Branstad fundraiser next month. "There's a lot of governors around this country who could run this country a lot better than people in Washington."
Associated Press writer Thomas Beaumont in Des Moines, Iowa, and news survey specialist Dennis Junius in Washington contributed to this report.