Indiana: If the Republicans lose the Indiana Senate seat, it will go down as part of a growing list of seats it fumbled away despite clear advantages. State Treasurer Richard Mourdock (R) mounted a grass-roots, Tea-Party fueled challenge to incumbent Sen. Richard Lugar in the GOP primary, and prevailed. Ordinarily, the Republican nominee could have cruised home, but Mourdock had alienated Lugar’s supporters, who proved to be difficult to reclaim.