Congressional candidate from northern Mississippi launches ad backing away from the Illinois Senator.

Calls the claim that Obama endorsed him “an attack”– Watch the ad here. (RealPlayer)

“Senator Obama hasn’t endorsed my candidacy. I have not been in contact with his campaign nor has he been in contact with mine.”

Earlier, Travis Childers’ opponent ran an ad linking Childers to Obama.

NRCC spokesman: Ad highlights “the toxicity an Obama candidacy can bring to Democratic campaigns down-ballot.” Full statement here.