That sure is what it sounds like:

ABC News’ Teddy Davis Reports: A top adviser to John McCain said Wednesday that he will step down from the Arizona senator’s presidential campaign if the presumed GOP nominee faces Sen. Barack Obama, D-Ill., in the general election.

“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.”

If this feeling gets echoed throughout both campaigns, then we could be on our way to the most civil general election in history.