“‘I would simply be uncomfortable being in a campaign that would be inevitably attacking Barack Obama,’ said McCain adviser Mark McKinnon in an interview with NPR’s ‘All Things Considered.’ ‘I think it would be uncomfortable for me, and I think it would be bad for the McCain campaign.'” McCain advisor (and former Dem) Mark McKinnon says he’ll step down if Obama wins the Democratic nomination. “‘I met Barack Obama, I read his book, I like him a great deal,’ said McKinnon. ‘I disagree with him on very fundamental issues. But I think, as I said, I think it would a great race for the country.'”