Politics | John McCain McCain's Media Chief Steps Down McKinnon doesn't want to work against Obama By Rob Quinn Posted May 21, 2008 6:05 AM CDT Copied Mark McKinnon, left, and spokesperson Brooke Buchanan, right, listen as McCain speaks at a press conference with a televangelist from Cornerstone Church in San Antonio, Texas, Feb. 27, 2008. (AP Photo/Gerald Herbert) John McCain's top media adviser is keeping his promise and stepping down from his role in the senator's campaign, the Washington Post reports. Mark McKinnon said last year that he had no desire to work against Barack Obama if he became the Democratic nominee. Insiders say the departure of the former Bush campaign aide will be a heavy blow to McCain's campaign. Read These Next 11 people hurt in a "brutal act of violence" in Michigan. We knew Letterman would pipe up about Colbert eventually. A parent's nightmare, in a white cardboard box. The humans survived this flight; the deer on the ground didn't. Report an error