Republican leadership officials, in a series of private meetings and conversations this past week, warned that the White House, much less the broader public, doesn’t understand how hard it will be to talk restive conservatives off the fiscal ledge. To the vast majority of House Republicans, it is far riskier long term to pile up new debt than it is to test the market and economic reaction of default or closing down the government.

GOP officials said more than half of their members are prepared to allow default unless Obama agrees to dramatic cuts he has repeatedly said he opposes. Many more members, including some party leaders, are prepared to shut down the government to make their point. House Speaker John Boehner “may need a shutdown just to get it out of their system,” said a top GOP leadership adviser. “We might need to do that for member-management purposes — so they have an endgame and can show their constituents they’re fighting.”…

That will be a tough sell, says Chris Chocola, president of the conservative Club for Growth. “What’s more irresponsible: continuing on this path to fiscal ruin, or changing the path?” he said. “There is a high level of frustration, and a willingness to do something dramatic. They think this is the only way to get Obama’s attention.”