Something I didn't know about taxes...

Joe Carter has his own set of debate notes.
This is #6:

Kerry made a minor gaffe by bringing up the tax cuts. While it may have been a slight advantage to him, it certainly doesn’t help his party. Last week almost every one of the Democratic legislators in Congress voted to keep the tax breaks in place. As they hit the campaign trail they will have to defend a vote that was trashed by their own Presidential candidate.

I find it interesting that so many would vote for it, after all the complaining that they've done. So, did they do it because it was politically expedient to do so, as in, they felt their voters wanted it that way? Or do you think they actually think that the tax cuts are good for the economy? Either one is good news I think.