He's made a nice little laundry list of excesses he can no longer abide:
http://littlegreenfootballs.com/article/35243_Why_I_Parted_Ways_With_The_RightTry to find something on the list that wasn't going on in spades 8 years ago, when he flipped from cracking Bush jokes one day to pop-eyed wingnut the next.
Okay, there's one -- Obama wasn't around for them to beat on. The rest of the vile stew is what he's been soaking in for 8 years, apparently without noticing.
Congratulations, Charles. Now, go away.
Andrew Sullivan's announced his break from the Right too, BTW:
http://andrewsullivan.theatlantic.com/the_daily_dish/2009/12/leaving-the-right.html