HELENA, Mont. (AP) — A former Montana lawmaker and political science instructor is asking the state Commissioner of Political Practices for a ruling on whether Democratic attorney general candidate Raph Graybill meets the requirements to run for office.

The argument by David Wanzenried of Billings comes down to the interpretation of a requirement that a person running for attorney general must be admitted to practice law in Montana and to have engaged in active practice of law for at least five years before election.

Graybill’s campaign said he clearly meets the requirements and notes that Wanzenried has endorsed and held a campaign fundraiser for his opponent, Kimberly Dudik of Missoula.

Commissioner Jeff Mangan said Wednesday he would take any additional written arguments through Friday and that making a decision is one of his office’s highest priorities. The decision could be appealed directly to District Court, Mangan said.

Wanzenreid said he’d like to see a decision by the time the candidate filing period ends on March 9, prior to the primary election on June 2 or no later than the general election on Nov. 3.

Wanzenreid, a political science professor at Montana State University-Billings and a former legislator from Missoula, argues Graybill was admitted as an active member of the Montana Bar on Sept. 22, 2015, and will not have been active for five years prior to the June 2 primary. Graybill’s campaign counters that the primary is a nomination for the actual election, which takes place on Nov. 3, by which time he will have met the length-of-practice qualification.

Wanzenried also argues that Graybill has worked as a federal law clerk and for a law firm in Washington state and therefore will not have been actively practicing law in Montana for five years before the election.

Graybill, the chief legal counsel for Montana Gov. Steve Bullock, cited a Montana Supreme Court ruling that said service as a judicial law clerk qualifies as active practice. Graybill remained licensed and a member of the Montana Bar while in active practice at a Seattle law firm, his campaign responded.

“Contrary to the complaint’s analysis, there is no hidden additional test for how many of an attorney’s cases are in Montana, or whether an attorney is a litigator at all,” Graybill’s campaign wrote in its response.