The Jefferson County Sheriff's race is heading toward a pivotal week as challenger Tyler Anderson faces mounting questions about his law enforcement credentials — questions that will remain unresolved even after November's general election, when Anderson faces incumbent Sheriff Jason Pollock.

Anderson, a former Jefferson County Sheriff's Office deputy who was fired in 2025, is not on the May 19 primary ballot. With only two candidates in the race, the contest goes directly to the November general election. But new developments around Anderson's fitness to serve have taken center stage in the final days before primary voters head to the polls on other county races.

Placed on the Brady List

In July 2025, both the Jefferson County District Attorney and the Crook County District Attorney added Anderson to what is known as the Brady List — a roster of law enforcement officers whose past credibility issues must be disclosed to defense attorneys in criminal cases. Officers on the list typically cannot testify in criminal prosecutions because prosecutors cannot ethically vouch for their honesty on the stand.

A letter provided by acting Jefferson County District Attorney Steven Leriche states that three separate law enforcement agencies — the Parma, Idaho Police Department; the Oregon State Police; and the Jefferson County Sheriff's Office — have each made independent "findings of untruthfulness or dishonesty" against Anderson.

DPSST Review Set for May 21

The most immediate legal question concerns Anderson's Oregon law enforcement certifications. The Department of Public Safety Standards and Training (DPSST) Police Policy Committee will review Anderson's case on May 21 — just two days after the primary. The committee will decide whether his certifications should be revoked.

Under Oregon law, a county sheriff must hold a valid law enforcement certification or obtain recertification within one year of taking office. If Anderson wins in November but loses his credentials, he would need to be recertified while in office — an unusual situation that would place significant pressure on county law enforcement operations.

Key Allegations

The DA's Brady List letter outlines a pattern of alleged dishonesty that stretches back decades. Among the central findings:

  • Anderson failed to disclose his prior employment and 2004 termination from the Parma, Idaho Police Department — a termination for dishonesty — on later job applications with both the Madras Police Department and the Oregon State Police.
  • Anderson was placed on administrative leave from the Jefferson County Sheriff's Office in October 2024 during an investigation into an "inappropriate relationship with a purported informant."
  • Before being interviewed by FBI special agents, Anderson admitted he had "deleted a ton" of messages, including full conversations, from his personal cell phone.

Anderson Stands Firm

Anderson told the Madras Pioneer he plans to remain in the race and expressed confidence that his attorneys would prevail at the DPSST hearing.

"It will have no impact for me," he said of the Brady List placement. "The only impact will be for the (district attorney's) office on having me testify."

He said he also hopes to overturn the Brady List designation once "a new DA" is in office. On the DPSST matter, he said if certifications were revoked, his planned undersheriff — whom he called "probably the best choice for sheriff in Jefferson County" — could serve in the interim.

Anderson has sought to distinguish his situation from that of former Deschutes County Sheriff Kent Vanderkamp, who resigned after being placed on the Brady List for giving false testimony in court cases. "I've never lied on the stand, I've never lied in police reports," Anderson said.

Sheriff Jason Pollock has not publicly commented on Anderson's certification status. Jefferson County voters will weigh in on Commissioner races and other local contests on May 19. The Sheriff's race will appear on the November general election ballot.