Rick Santorum's Colorado and Missouri caucus wins put a nice dent in Mitt Romney's aura of inevitability, but didn't come close to overtaking him in the delegate count. On the other hand, he has just 87 of 1,144 delegates needed to win the GOP nomination, with more than 80 percent of the U.S. still awaiting a chance to be heard. Take away Florida's winner-take-all primary - one of only two such races so far - and his total would be even ...