A conservative super PAC largely funded by the billionaire Koch brothers has pulled television ads in Indiana's Senate race attacking Democrat Joe Donnelly, but political strategists with the group will continue their plans to target the race.Americans for Prosperity reserved airtime to assist Republican Richard Mourdock in the closely watched contest, where polling has shown it is a statistical tie. Last month, the group launched a website against Donnelly, highlighting his votes in Congress but reports say the super PAC has a disagreement over how to target the congressman.From RTV6: