Sarah Palin Stumps for John McCain

Facing strong opposition from the Right in his bid for re-election, John McCain is getting some heavy-hitting support. Sarah Palin's joined the Arizona Senator at a Tucson rally today and in Phoenix tomorrow. The pairing echoes McCain's presidential campaign, where Palin, who was his running-mate, captured most of the attention. Mark Halperin, co-author of Game Change, a tell-all book about the presidential campaign, is senior political analyst for Time magazine.