After the hot times of summer and the conventions, the movement seen in the final 2 months of the campaign are usually people 'returning' to the candidate they identify with, as well as slowly shaking off the anger or jealousy that 'their' candidate was not nominated. So my predicition is that if the Demo race goes all the way to the convention in June, there will be a lot of hard feelings and many claiming they will vote for a 3rd or independent cadidate, or not at all. In spite of that, opinion polls will indicate strong support for the Demo candidate to win the election... until the Republican convention, when it will turn in their favor for a few weeks. But in Sept. and Oct. the tendency to return will take place, many Demo-leaners will be 'over it' and enthused again, and the polls will indicate a close one. So then it will depend on who reallly had the most identification to begin with. Although it's far from a checkmate, I think that would be McCain.