With today's primary vote in Florida, the Republican infighting between Mitt Romney and Newt Gingrich has gotten contentious. By splicing together clips from debates and Mortal KombatJon Stewart reviews how Newt attacked Mitt when the latter was winning in South Carolina and how the attacks started going in the other direction once Newt gained an edge in the polls. Mitt later started losing to Newt in the polling the attacks started going the other way. It's a mutually assured destruction that late-night comedians (and others) can't get enough of.