We are about to begin seeing the first US Senate campaign ads hit airwaves across Texas. As Politico first reported today, the first major ad buy is sponsored by a super PAC that supports Sen. John Cornyn. The ad, paid for by Texans for a Conservative Majority, is an attack on Cornyn’s GOP challenger, Rep. Steve Stockman.

According to Politico, the 30-second spot will first be seen in southeast Texas and Houston, which is the part of the state Stockman represents. The ad accuses Stockman of “Lies, shady deals and ethical failings in Washington” and alleges that Stockman of failed to disclose off-shore business dealings.

You can watch it, below.