OSAGE CITY, Kan. (AP) — Kansas Sen. Pat Roberts is getting help in his Republican primary race from a political action committee representing tea party challenger Milton Wolf’s fellow radiologists.

PAC Director Ted Burnes (burns) said Tuesday that the group believes Roberts will be more effective in the Senate than Wolf.

The American College of Radiology Association PAC this week disclosed spending almost $43,000 on statewide mailings praising Roberts.

Burnes also said it’s troubling that Wolf has acknowledged that in the past he posted graphic X-ray images on a personal Facebook page. Wolf apologized publicly, and he said Tuesday that many voters are upset with Roberts’ attacks over the issue.

Wolf said the PAC is a Washington special interest group that works to protect incumbents.

The state’s primary election in Aug. 5.