After years of relying on near-total Republican loyalty on the Iraq War, President Bush is suddenly confronting a major revolt inside his party's ranks in Congress, with a growing number of Republicans fearful of an electoral backlash if the president doesn't change course.
Tuesday's extraordinary meeting at the White House, where 11 House Republican moderates bluntly shared their concerns with the president, marked the most dramatic display to date of GOP unease over the war.
"It was about as candid as I've ever seen it from members of Congress to President Bush," said Rep. Ray LaHood, R-Ill., who participated in the meeting. "I think he understood what members were saying. He listened very intently. He certainly didn't get defensive. I think his mood was pretty sober."
Thursday, two GOP senators -- Lamar Alexander of Tennessee and Olympia J. Snowe of Maine -- joined with Democrats in unveiling bills that aim to alter U.S. policy in Iraq, despite the White House's objections.
"Time is running out, and America's patience is finite," said Snowe, who traveled to Iraq last weekend. "We cannot further countenance political intransigence by the Iraqi government while our men and women are on the frontline making sacrifices each and every day."
Participants in the Tuesday meeting said Bush seemed to get the message that his administration has little time to show progress in Iraq.
The president acknowledged concern that Iraq could lead to Republican losses in next year's elections, and said at one point, "I don't want to pass this off to another president."
The first test of party loyalty could come as soon as Thursday night, with Democrats pushing the latest version of their war-funding bill.
The White House opposes it because it would give the administration only about half of the money it is looking for, and most Republicans appear ready to back the president.
But the president shouldn't mistake that solidarity for any lasting loyalty to his administration, said Tony Fabrizio, a Republican pollster.
Republicans are still willing to follow the president's lead primarily because they realize that the party owns the war regardless of the outcome -- and therefore desperately want the president's troop "surge" to succeed, Fabrizio said.
"We're beyond half-pregnant here," he said. "We are locked in. If we turned and changed our position on the war and left, Iraq is still going to be our fault."
Fabrizio said more Republicans are likely to support establishing firm benchmarks for the Iraqi government to meet. But it's not yet clear that Republicans are willing to join Democrats in calling for a troop withdrawal to begin, he said.
The White House sought to downplay the importance of Tuesday's meeting, casting it as one of many private discussions the president is having with members of Congress.
"There is unity in the Republican Party about what's going on, on Capitol Hill right now," said White House Press Secretary Tony Snow. "If you want disunity, take a look at what's going on with Democrats, where they cannot agree upon a resolution."
But even outside of this week's White House meeting, Republican support for the war is showing signs of eroding.