The March 26<sup>th</sup> Gallup poll sees Obama pulling 44% to McCain’s 45% for a virtual tie. The same polling data gives Obama 48% to Clinton’s 44% among Democratic primary voters. If we conservatively estimate Democratic support at 44% and take Hillary’s 44% of that we can conclude Hillary as the support of about 22% of the voter’s overall. 28% of those voters equals about 6% of the national voters who are jumping party to McCain.
Now lets return to the Obama 44%/McCain 45% poll.
If the Hillary voters were not jumping party that would add 6% to Obama that would be subtracted from McCain giving us Obama 50%/McCain 39%.
What does this mean? It strikes me as a good news, bad news situation for both parties. A divided Democrat party appears to give McCain an even shot at this stage in the race but if the Dems can unite, they would have an overwhelming lead over McCain at this stage in the race.
Now keep in mind I have estimated low for the overall Democratic support since the 44% number is artificially depressed by the Hillary defectors to begin with so its probably a point or two more extreme than this.
I did not run these numbers for the Obama defectors because I am assuming Obama and McCain will be the nominees. In fact, I give Obama a slightly higher chance of being the Dem nominee that I do McCain being the GOP candidate. It is clear to me the only way Obama can lose the nomination is due to a scandal so big the party has to reject him or (God forbid) he becomes physically unable to be president. The same is true from McCain, of course. Since I believe Obama and McCain are essentially equally likely (or unlikely) to be derailed by scandal and McCain is far more likely to be derailed by health (God forbid) I think Obama is in a better position to be his party’s nominee.