This is the biggest revolt Bush has faced and it comes on the issue that has been the core and heart of his presidency, namely security.

It's, it's really been grim. I mean they realize that this is probably the biggest political crisis they've faced in the President's tenure. I think what they're trying to create now after two weeks is a level of engagement and urgency that the President created after three days, just three days after the 9/11 attacks. It's a major challenge.

Primary electorates tend to be more extreme electorates and a vote like Iraq, that was popular and centrist at the time, is going to be a lot less popular in the primary.

The expectations game can make a lot of difference, ... But people are looking at what the campaigns say much more skeptically this year.

Until now, Bush's approach has been defensive: We are a nation at war, and we can't afford a change, ... And lately, people seem to agree with him.

You can't just say I'm a trustworthy guy, you have to show it,