Oklahoma 2026 › Judges on the ballot › Associate District Judge, Logan County
Associate District Judge, Logan County: Oklahoma 2026
Sierra Pfeiffer and Diane Vaughan are on the November 3, 2026 ballot for Associate District Judge, Logan County in Oklahoma. This seat is elected only inside its court district or county, so it appears on some Oklahoma ballots, not all; enter your address in the lookup to check yours.
Sierra Pfeiffer
Sierra Pfeiffer is Deputy General Counsel for the Oklahoma State Bureau of Investigation, per her campaign site. She has 13 years of experience in Oklahoma's criminal justice system, including as a Logan County assistant district attorney, and earned her law degree with honors from the University of Oklahoma College of Law, per the same source.
Priorities: Says she will apply the law as written, without activism or bias., per the campaign site · Emphasizes public safety and swift handling of probation-violation cases., per the campaign site
Campaign site · Full profile · Official list
Diane Vaughan
Diane Vaughan currently serves as Logan County's associate district judge after being sworn in to the post following a vacancy, per Guthrie News Page. She spent nearly eight years as an assistant district attorney in Payne and Logan counties and nearly 21 years in the Air National Guard, retiring as an assistant staff judge advocate after two Middle East deployments, per her campaign site.
Priorities: Campaigns on upholding the Constitution and rule of law by deciding cases on facts and evidence., per the campaign site · Says she will ensure litigants and victims are treated with dignity throughout the judicial process., per the campaign site
Campaign site · Full profile · Official list
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