The reason Dred's solution wouldn't work is that if all the people who didn't want a recap of the Rush Limbaugh/Keith Olbermann talking points of the day switched to Channel 1, so would the people who do want a recap of said talking points. The people spewing talking points, and the AH chat buffer's nature prevents anything deeper than bumper sticker/talking point discussion anyways, would move to channel 1 as well. In the vast majority of cases they wouldn't move to be malicious, but rather to be where the crowd is, where their buddies are and where they can shoot the breeze about the game. The fact that sometimes they go overboard and start their talking point spewing is a separate issue. They want to participate in the community as well. In addition, chatting your talking points into a channel with only a few guys in it who already agree with you 90+% of the time isn't very satisfying I wouldn't think.
There are plenty of other places on the internet to do politics, and do them better.