Congressional candidate Chuck Wooten is facing a lawsuit that could throw him off the ballot long before the Republican primary in August.
Former Tucson mayoral candidate and fellow Republican Shaun McClusky filed the lawsuit, claiming at least 770 of 1,892 Wooten's signatures should be disqualified.
McClusky said he wants Republicans to win in November and felt those signing Wooten's signature didn't realize he had only registered with the GOP two months after he announced he was running for the CD2 seat.
Wooten called the registration error an oversight, blaming it on county employees.
At least 472, McClusky argues, were signed on Republican partisan nomination form at time when Wooten was not a registered Republican.
Another 110 signatures were not registered while another 98 were registered with another party.
78 more were not registered in CD2 and 9 were filled out so poorly, that they could not be independently verified.
If all the 770 signatures are invalidated next week by a judge, it would leave Wooten 145 short of the minimum to qualify as a candidate for Congressional District 2.
If successful, only two valid candidates would remain, former Air Force colonel Martha McSally and small business owner Shelley Kais. Both are Republicans.
Wooten could not be immediately reached for comment, but has already filed paperwork vowing to fight the lawsuit filed McClusky.
The case is scheduled to go before a Pima County Superior Court judge on June 18.