WICHITA, Kan. (AP) — The Republican primary challenger to U.S. Rep. Tim Huelskamp has filed a complaint with the Kansas Secretary of State’s office raising questions about his opponent’s residency, allegations that the congressman has dismissed as desperate and frivolous.

The complaint filed Thursday by Roger Marshall, a Great Bend obstetrician, contends Huelskamp did not disclose his address when he filed his candidacy paperwork and should not therefore appear on the ballot. It also alleges the address on his Federal Elections Commission filing does not belong to him.

Huelskamp’s campaign manager, Jimmy Keady, says the congressman returns to Kansas every week. His children are enrolled in Kansas schools and the family attends church in Kansas. He says Huelskamp is also registered to vote in Kansas and is a properly filed candidate.