A group aligned with Minnesota Rep. Michele Bachmann plans to air a radio ad in South Carolina attacking what it calls Texas Gov. Rick Perry’s “atrocious record” on illegal immigration, the group wrote in a posting on its website.

The ad, which will air during conservative talk shows starting Tuesday, will seek to portray Bachmann as tough on illegal immigration and Perry as failing to crack down on it as governor. It’s being put out by Keep Conservatives United, a conservative Super PAC based in Raleigh, N.C.

“The difference is clear,” the ad says. “To stop illegal immigration, support Michele Bachmann.”