The Drive: The craziest campaign week yet

In the latest episode of the Drive, I discuss this rather amazing week in the GOP presidential campaign. A quick review of what we've seen so far: Two candidates dropping out of the race; an ex-wife alleging a leading candidate proposed an "open marriage"; the announcement that Rick Santorum might actually have won the Iowa caucuses, though we'll never know; Mitt Romney seeing his status as runaway frontrunner disappear; and one of the most memorable debate moments in recent history.

And all that came before tomorrow's crucial South Carolina primary, which may well decide whether Romney wraps up the nomination early or if the fight will go to March and possibly beyond. Check out the show at left.