The National Rifle Association will endorse Sen. Dick Lugar's (R-Ind.) Tea Party-backed primary opponent Wednesday morning, sources with knowledge of the endorsement told The Hill.
Their endorsement of Indiana state Treasurer Richard Mourdock (R) over Lugar could be a body blow to the longtime senator. The NRA is a powerful group popular in Indiana, a state where many Democrats also support the group's policy goals. By making Lugar a target, they could contribute to his downfall.
Mourdock already has the backing of many fiscally conservative outside groups, including the deep-pocketed Club for Growth, but the NRA's endorsement will give him added support from a new group of conservatives.