State Senator District 10 in Missouri State Senate District 10, Missouri

2026 Primary Election

• Tricia Byrnes — Incumbent State Representative in Wentzville, MO

  Tricia Byrnes is a Republican State Representative for Missouri's District 63, first elected in 2022. A Wentzville resident, she previously served on the Wentzville Board of Aldermen. Byrnes holds a Master's degree and works as a licensed real estate agent. In the House, she championed environmental accountability, particularly on radioactive contamination, mental health reform via the 988 Lifeline, and passed the Childhood Hero Act against school bullying. While some sources indicate a 2026 State Senate District 10 run, her campaign announced in October 2025 she will instead seek the St. Charles County Collector position, focusing on taxpayer advocacy and fiscally responsible tax relief.

• Mike Deering — School Board Member in Montgomery City, MO

  Mike Deering is a Republican candidate seeking to represent District 10 in the Missouri State Senate in the 2026 primary election. He currently serves as an at-large member of the Montgomery County R-II School District school board in Missouri, a position he assumed in 2024 with his term ending in 2027. His campaign emphasizes the need to "make common sense, common again" as he seeks to become the next State Senator for the 10th District.

• John Wells — Candidate for Missouri State Senate - District 10 in MO

  John Wells is a Democratic candidate for the Missouri State Senate, seeking to represent District 10. He is slated to appear on the Democratic primary ballot on August 4, 2026. Wells is one of two Democratic candidates challenging for the seat in the primary election. The general election for the District 10 seat will follow on November 3, 2026. Information regarding his professional background, specific policy positions, or reasons for running is not available in the provided search results.

• Pablo John Los — Candidate for State Senator in Hermann, MO

  Pablo John Los is a Democratic candidate seeking election to the Missouri State Senate, representing District 10. He is currently on the ballot for the Democratic primary, which is set to occur on August 4, 2026. In this primary contest, Los will be running against fellow Democrat John Wells. His candidacy aligns with a significant push by the Missouri Democratic Party, which is fielding candidates in a large number of state and congressional races in 2026, reflecting a reported wave of Democratic enthusiasm. While specific details about Los's policy stances or professional background are not available in the provided information, he is campaigning to represent District 10 in the Missouri State Senate.