AFTER months of firing up core supporters in swing states with partisan attack lines and blood-chilling predictions about the other side’s plans, Barack Obama and Mitt Romney found themselves in their first televised debate on October 3rd, obliged to pitch for undecided voters and independents nationwide. Both Mr Obama and Mr Romney duly struck a moderate tone, with none of the personal attacks that have marked the rest of the campaign. (Mr Obama even declined to shoot at a goal left open when Mr Romney joked about tax breaks for firms that moved jobs overseas, saying that since he knew nothing about them: “I maybe need to get a new accountant.”)