As of this evening, Iowa Electronic Markets has Hillary Clinton as a better than two-to-one favorite for the Democrat nomination in 2008. Rudy Giuliani, Mitt Romney, and Fred Thompson are in a close race for the Republican nomination; therefore, none is better than a one-in-three favorite.
In spite of the Republican elephant race, and because of Frau Clinton's dominance of Democrats, the IEM odds on the outcome of the election give only a slight edge to the Democrat nominee: 52-48. And that's before Republicans unite to attack Clinton and her Soviet-style agenda.