"John Kerry says Republican John McCain doesn't have the judgment to be president.

If that's the case, then it's probably a good thing McCain rejected overtures from Kerry, the Democratic presidential nominee in 2004, to form a bipartisan ticket and run with Kerry as his candidate for vice president.

... McCain came to Kerry's aid in March 2004 after Bush and his campaign tried to paint the Democrat as weak on defense. He rejected the suggestion in broadcast interviews and chided both parties for waging such a "bitter and partisan" campaign.

...For the record, Kerry is not among those being mentioned as possible running mates for McCain." -- Hope Yen, Associated Press