While everyone knows Mitt Romney wants tonight's debate to be about which candidate is best on the economy, John McCain's message is evolving ...

Sure, McCain will attempt to neutralize the economy issue, and, of course, will continue to talk up his security credentials -- but the big change in McCain's message will be that he has begun stressing that he is the Republican who can win a General election.

In short, McCain wants voters to decide based on the question:  Which Republican can beat Hillary (McCain knows that polling shows he wins on that issue).

This was confirmed to me last night by a McCain spokesperson. 

The video that Mary Katherine Ham posted below shows this new "electability" strategy in full force...