welcome back to "hardball," how far will liberals go with president obama over this tax caught kut? how long will this the fight go on? activists mount a challenge against him to make it sweat it out? howard fineman the senior political ed for from the huffington post. he knows what is going on. msnbc analyst here and joan wall with shall is editor at cheer, in large, at salon.com. joan, with your smile, i have to go to you. i can't resist it one thing you know is if you have a primary challenge it is almost lethal to the incumbent, but apart from that people say november doesn't count, let's talk about primaries, they are funsome there any talk out there in the progressive world for somebody like feingold, lost his fight in minnesota or wisconsin rather or possibly howard dean, upset with