From NBC's Chuck Todd and Mark Murray
Newsweek's political blog reported yesterday that Bush ad-maker Mark McKinnon -- who is serving as a senior adviser to McCain's campaign -- says he will quit the McCain camp if Obama wins the Democratic nomination. "[H]e felt that the Illinois senator--as an African-American politician--has a unique potential to change the country. Therefore, McKinnon argued, he wanted no part in any efforts to tear down Obama's candidacy."

This isn't the first time a former top Bush campaign operative has said nice things about Obama. Remember that Matthew Dowd, in that New York Times interview in which he criticized Bush and his presidency, said that the only oh-eighter he could think of supporting is Obama.

McKinnon tells First Read that he cannot "demand a retraction" on the Newsweek report, but he wants to make clear that under a scenario of Obama vs McCain, "I would still be 100% supporting John McCain."