I wouldn't bet on it.
In fact, neither will people who bet on it with actual money.
Tradesports is a trade exchange futures clearing house which has had an almost perfect record in "predicting" such outcomes. In 2004 for example, it called the Election results correctly in 49 of 50 states, including the Senate.
For 2008, the odds have Hillary leading the rest of the Democrat pack by 5-1. She is practically unstoppable for the nomination. It also has the Democrats (read, Hillary!) winning the Presidential Election with favorable odds 50.3 vs 48.1 for the GOP. Granted, it's still early. But these are very uneasy indications of the investor mood out there. The smart money is betting on a Hillary win.
Be afraid. Be very afraid!
By November 2008, the public will be so tired of the continuing mounting American casualties in Afghanistan, Iraq, and Syria, and likewise of the claims that there is light at the end of the tunnel that just about anyone the Democrats nominate will have a fairly easy shot at winning.