NPR:

As climate change emerged as a top issue on the national scene a few years ago, it had one unusual quality: The response to it showed surprising signs of bipartisan support.
Two or three years ago, Republicans such as Sen. John McCain and Govs. Arnold Schwarzenegger and Charlie Crist played nearly as prominent a role as Al Gore in advocating a robust regulatory response.
No more. Climate hasn’t yet become as partisan an issue as, say, health care and taxes. But it’s getting there.

Gee, I wonder what happened — other than McCain losing the presidential election, Schwarzenegger becoming less popular than the recalled Gray Davis, and Charlie Crist about to lose his primary to a virtual unknown.