The RNC and NRSC did support Akin before two days ago. They backed him over Palin/Tea Party candidates. Plus, the Democrats and McCaskill backed him too.
Gee, I suppose we should be so thankful.
BTW, they don't select candidates to support in primaries.
As for McCaskill, the rats don't think conservatism wins. Akin is going to beat McCaskill despite the surrender monkeys at this thread.