Surprise news from the Senate today: Iowa Democrat Tom Harkin tells AP he will not run for re-election in 2014. Harkin, 73, pointed out that he would be 81 if he completed a sixth term. "It's just time," he says. Harkin has long been a champion of liberal causes and ran for president in 1992 before dropping out to back Bill Clinton. Republicans, who need six seats to regain control of the Senate in the midterms, are sure to be thrilled with the decision.