The tea party candidate challenging Sen. Pat Roberts (R-Kan.) released a radio ad Wednesday slamming the senator over recent revelations that he pays rent to supporters to stay with them when he is in the state and leases out the house he owns there.

"Pat Roberts doesn’t live in Kansas," says the narrator of the ad from the campaign of Milton Wolf. "He lives in Virginia. Right by Washington, where Roberts has been for forty-seven years."

The New York Times reported last week that Roberts, who owns a home in northern Virginia, recently switched his voter registration address to the house where he pays $300 a month to stay when he is in town. He had previously been registered at the house he own in the state, which he leases out.

"When Roberts does visit he says he has 'full access' to a La-Z-Boy recliner. At a donor’s house. On a golf course," the ad's narrator continues.

That's a reference to a Roberts quote in the Times story. The senator joked to the paper that he has "full access to the recliner" in the house where he stays.

Wolf's campaign is spending about $4,500 to air the ad over the course of five days, it confirmed. Even in Kansas, where airtime is relatively cheap, that's a limited buy.

CNN first reported on the commercial.

A radiologist and the second cousin once removed of President Obama, Wolf is running as a tea party candidate in the mold of Sen. Ted Cruz (R-Tex.). At this point, he remains something of a long-shot, but the story about Roberts's residency could give him a new opening ahead of the August primary.

Updated at 4:12 p.m.