He can't win among Republicans. He won New Hampshire with lots of support from independents in an open primary where lots of independents voted. He lost to Mitt among Republicans. In Michigan he lost in an open primary where lots of independents didn't vote. He lost to Mitt among Republicans by 8%.
Going forward, there aren't too many open primaries left and until he can manage to win among registered Republicans, McCain isn't going anywhere.
Going forward, there aren't too many open primaries left and until he can manage to win among registered Republicans, McCain isn't going anywhere.