U.S. Sen. Rand Paul, R-Ky., is now running robo calls for Republican Missouri Senate candidate Todd Akin."I know Todd Akin will stand up and support the Constitution," says Paul. "Todd Akin has stood up to the Washington establishment and I know that when he gets to Washington he'll stand with me and vote to repeal Obamcare."Check it out (via Politico):For the past week, Paul's political action committee has been supporting the controversial congressman in TV ads. Several other GOP groups have been putting in a last-minute investment to help Akin unseat Democratic incumbent Claire McCaskill, who is holding a 4-point lead in a recent poll.