I think President Obama is particularly vulnerable is the extreme distaste, to put it mildly, that so many people have for him, Republicans and people on the right. And I'm—that may bleed over into the independents and swing voters who are going to decide this election in the fall.
What is it with these people? While Obama supporters from 2008 may be disappointed in his centerism, I do not think any Obama supporter is so disappointed they hate the man. On the other hand, right wingers create this bogeyman from hell which does not exist.