Democrats Hillary Clinton and Barack Obama traded critical ads in the run-up to the Pennsylvania primaries.
And now that Pennsylvania is in the rear-view mirror -- North Carolina Republicans are getting in on the act.
A John McCain ad slams two North Carolina politicians for endorsing Obama in light of his relationship to the controversial Reverend Jeremiah Wright.
McCain came out against the ad, and says he asked for it not to be aired. But the North Carolina GOP balked at the idea. They say voters need to know about the people Obama surrounds himself with.
"Unfortunately, in Barack Obama's run for the White House, he has chosen to associate himself with the wrong people," McCain said.
North Carolina and Indiana both hold their primaries May 6.