Well, after 11 Republican Congressmen who voted against S-CHIP lost their seats in 2008, Thad was daunted by the politics of S-CHIP: Thad voted in favor of the expansion.
Does that mean that Thaddeus has lost his soul? Perhaps. But it seems to me that he's simply exposed himself for the opportunist he is. Thad knows that he is going to be challenged in 2010, and he is unwilling to give Democrats in the District this issue to run on. Fair enough.
I still think there's a greater issue to be had. Do we in the Eleventh want a Congressman who would even consider voting against children's health care?