Do you see any reason why a voter would change his or her mind to vote for John McCain? Even the latest change--to tone down the hostility that has been so marked at McCain rallies--is not going to convince any undecided voter that McCain should be President.
Not that McCain has been helped by the administration's shifting positions on the economic crisis. As of today, it appears that Secretary Paulson has embraced the idea of "injecting capital" into banks, i.e., having the government purchase stock. This is an approach that many economists have favored, but that was rejected by the administration just a week or so ago. To make matters worse for McCain, the idea is anathema to that part of his base that views such a step as socialism.
Still, you would think that there are enough professional operatives in McCain's campaign that they would be able to present some argument for their candidate. But no. If McCain dials back on the fear appeal, there's nothing left.