We've gotten our hands on an advanced transcript of this weekend's "The Chris Matthews Show" on NBC and the British Broadcasting Corporation's Katty Kay offered this nugget during the show's "Tell Me Something I Don't Know" segment:

"John McCain is going to be doing more of these themed tours of America, and one of them is going to be on energy and global climate change. It could get him into trouble with Republicans, of course, and with the base, who don't think there is much climate change going on, but it is something that he's very passionate about and he's going to be talking about it."

Yeas & Nays - McCain planning climate change tour - Examiner.com

..and people wonder by the Base doesn't support him.