DES MOINES, Iowa - Heated? For sure. Intense? Of course. Yet the Iowa caucus campaign nearly now coming to a close has been a surprisingly civilized affair, four years after caucus-goers appeared to punish two presidential hopefuls for playing too rough. This time, the exception illustrates the rule. "If I believed half of that stuff, I wouldn't vote for myself," Republican Mike Huckabee told reporters on Saturday. The object of his unhappiness? An ad aired by the campaign of rival Mitt Romney that said he had "granted 1,033 pardons and commutations, including 12 convicted murderers ... more clemencies than the...