Read what I said up the thread about Bush being a lame duck: these POTUS wannabes don't give on rat's butt about what Bush wants now.
Bush isn't and never will be a lame duck.
The reason they are voting this way is because they believe WE will vote for them because the Dems are so extreme. The only way to disillusion them of their opinion of US is to take them out in their primaries or on election day if need be.
We are the ones they don't respect.