Lt. Gov. David Dewhurst’s latest radio ad resurrects a heated Houston radio interview between his opponent, Ted Cruz, and conservative State Sen. Dan Patrick. During the June interview, Patrick accused Cruz of lying and criticized him for his campaign attacks.

The two also got into an argument over whether or not Patrick had formally endorsed Lt. Gov. Dewhurst for Senate.

Dewhurst’s new ad accuses Cruz of being "incapable of hearing the truth, as evident when confronted with the facts about David’s Dewhurst’s conservative record by Senator Patrick."

You can listen to the :60 ad, here: