If either one of the two senators from FL were candidates for President right now and continued job-hunting instead of fulfilling their primary responsibility to the FL citizenry, then I'd be carrying the banner calling for their removal from office.

McCain does have the option to "resign his nomination" immediately and deal with this severe crisis. Mitt and the Gov could then continue the campaign without John. Things seem to be very quiet in Alaska and Mitt is not busy so .. no harm.