John McCain announces his candidacy on Letterman

This may come as news to those who thought John McCain was already in the 2008 Presidential race, but he'll announce his candidacy officially tonight on "Late Show with David Letterman" (11:35 p.m., CBS Channel 2).

From CBS's press release: Letterman later asked Sen. McCain if he would consider “the possibility President/Vice President, that kind of a thing, you divide that sort of deal up. You’re not interested in splitting that?” Sen. McCain said, “Well, you may remember that in the last election there was some conversation about me being Vice President of the Untied States, it wasn’t clear which party,” which garnered laughter from Letterman and the audience. “And I was on one of the shows and the guy said, ‘Well, what’s this about you being Vice President of the United States?’ I said, ‘You know, I spent all those years in a North Vietnamese prison camp, kept in the dark, fed scraps – why the heck would I want to do that all over again?’”