Only two days after Rudy:

McCain making his Presidential exploratory committee official tomorrow, The Hotline says. McCain's new web site is here.

Update: Speaking of Rudy and Presidential ambitions, Ben Smith of The Daily Politics has an interesting take on why Giuliani chose to set up a New York State committee, rather than one with the FEC, thus limiting his fundraising ability:

Rudy's gamble in incorporating a state committee that doesn't have to report fundraising was that he could get a wave of national media attention without inviting unwelcome scrutiny.

He got the wave of attention, and his committee, because of the way it was incorporated, won't have to declare whether he's actually starting to raise the kind of huge money $50-$100 million by the end of next year is the estimate -- he'll need to run for president.

The decision to do it this way, however, also deepens his insider problem, the worry that he isn't, ultimately, going to run.