CAMBRIDGE, Massachusetts (CNN) - Few people were surprised when Republican Sen. John McCain announced last week on "The Late Show with David Letterman" that he was running for president, except possibly rival late night talk show host Jay Leno.
"The only trouble we got into though was he promised Jay Leno we would announce on his show, so now we have a little West Coast issue," said Rick Davis, CEO of McCain's presidential bid. "So I wouldn't be surprised if he's out there sometime soon."
As for the substance of McCain's late night announcement, Davis says the Arizona senator was simply "declaring the obvious" in his appearance.
"How many of you really believe John McCain wasn't already running for President?" asked Davis, who was part of a panel of senior GOP presidential campaign advisers Monday night at Harvard University's Institute of Politics.
McCain's declaration on the Letterman show had little legal significance. He had already filed the necessary papers to run for president months before, including a document called a "statement of candidacy," and has been raising campaign funds and hiring staff in key states.
He will make what the campaign bills as an "official" announcement in April.