This effort needs to be stillborn.
We need to spread the message that McCain's run is all about justifying a third party to split the Republican vote and get Hillary elected. /tinfoil
Aaaaargh! I'm running for President!
McCain will have a public meltdown shortly after the New Hampshire primary, if not sooner!
McCain will switch party names if he doesn't get the bid.
It will party name only, Hillery will attest to that. He will be her running mate possible.
...I am predicting some of the newly elected Democrats to change parties within a year. This is about the amount of time the Democrats will crew things up so bad for themselves.