The Drive: Who's the GOP frontrunner?

Today marks the debut of a new CBSNews.com web show, called "The Drive for the Nomination," in which Senior Political Reporter Brian Montopoli charts who's up and who's down in the Republican primary field.

Above, check out the first episode of "The Drive," which includes discussion of a burgeoning feud between Sarah Palin and Michele Bachmann, an emerging "electability" argument for Mitt Romney, and the rise of Atlanta businessman Herman Cain.