Sen. Ted Cruz (R-Texas) has opened a new attack on Rep. Beto O’Rourke, ripping his Democratic opponent for his use of profanity.

In a new 27-second advertisement, Cruz argues that parents should leave their children at home when O’Rourke is around. It shows O’Rourke using the word “f—” on five different occasions.

“How f—ed up is that?” O’Rourke says in one clip.

“What the f— are these guys doing?” he asks in another.

{mosads}The advertisement’s narrator says during the video that O’Rourke “wants to be a senator, so he’s showing up across Texas sharing his wit and character.”

“If Beto shows up in your town, maybe keep the kids at home,” the narrator adds.

Recent polls have shown a tightening race between O’Rourke and Cruz ahead of November’s midterm elections. A poll published last week by Emerson College showed Cruz with just a 1-point lead over O’Rourke, well within the margin of error.

The Cook Political Report shifted the race from its “likely Republican” column to “lean Republican” last month. 

President Trump said Friday that he will hold a “major rally” next month for Cruz, writing in a tweet that O’Rourke “is a disaster for Texas — weak on Second Amendment, Crime, Borders, Military, and Vets!”