Sarah R. Duff, a Republican, is running for Collin County probate judge.
This candidacy is listed in the Texas secretary of state’s official November 3, 2026 certification for Collin County.
The county’s appointment announcement says Duff began serving as probate judge on Feb. 1, 2024. She previously served as associate judge for the probate court’s mental-health docket beginning in 2018. The county reports that she earned her law degree at Texas Tech University in 2007 and established a McKinney practice focused on probate and guardianship cases in 2013.
Responses are based on public data and answers to a Surround Sound Media questionnaire if they were provided.




