A super PAC backed by House Republican leaders has cut a television ad starring the brother of Randy Bryce, the Democrat competing for the Wisconsin congressional seat being vacated by House Speaker Paul D. Ryan (R).

The ad, in which James Bryce criticizes his brother’s anti-police rhetoric, is the second in as many days unveiled by the PAC, which said Monday that it has reserved $1.5 million in TV and digital advertising for a district that Ryan has represented since 1999.

Appearing on camera, James Bryce relays that he has been a cop for more than 23 years and that FBI statistics show an increase in assaults on police officers in recent years, which he attributes in part to “cop-hating rhetoric.”

As James Bryce speaks, viewers see a 2012 tweet in which Randy Bryce refers to police as “terrorists.”

“When people refer to police officers as terrorists, that hits a little close to home,” James Bryce says. “I don’t think people want to be represented by someone who’s shown contempt for those in law enforcement.”

Randy Bryce, a Wisconsin Democratic candidate for the U.S. House, answers a question during a debate last year. (Angela Major/AP)

He then shares that he’ll be voting for his brother’s Republican opponent, Bryan Steil.

The other ad unveiled by the PAC this week focuses on Randy Bryce’s criminal record, which includes nine arrests, several from the 1990s related to drunken driving and possession of marijuana.

James Bryce previously donated money to Ryan and Steil, and at one point considered running for the seat against his brother.

Asked about Monday’s attack ad, Randy Bryce’s campaign manager, David Keith, told the Milwaukee Journal Sentinel that it showed Republicans are nervous about losing the seat.

“The Republicans are very scared because they know that this seat is prime for the taking and Randy Bryce is in a unique position to win it,” Keith told the paper. “You don’t go negative if your numbers look good.”