I can only speculate that there are those keeping powder dry regarding a McCain run... He is way too devisive within the GOP. His health is suspect and his respect for the Bill of Rights will be his downfall... He will be running on his ego....and that translated is "running on empty!"
McCain is still a pro-life conservative who has a conservative voting record. He is also a genuine war hero. His status as a maverick plays well to independents. I agree that his efforts to limit political speech and other anti-Bush positions will not play well with the GOP base. Despite the MSM's lionization of McCain, he was only able to get about one-third of the vote during the 2000 primaries, some of it due to crossover votes. I would give him a better shot at beating Hillary than winning the GOP nomination.