Currently holds the office of U.S. House of Representatives - Missouri 3rd Congressional District until January 3, 2027.
Candidate for U.S. House of Representatives - Missouri 3rd Congressional District in 2026 Missouri Primary Election.
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Get StartedIn committee he was a principal author of 2019’s HB 126, the “Heartbeat Bill,” which Missouri Right to Life called the most important pro-life bill in Missouri history. HB 126 included a trigger clause that enabled Missouri to be the first in the nation to protect all innocent human life. Learn more
Dr. Onder sponsored legislation, SB638, to guard against public school children being indoctrinated with divisive Critical Race Theory. Learn more
Dr. Onder sponsored and passed anti-BDS legislation, SB739, preventing taxpayer dollars from going to entities engaged in a boycott against Israel. Learn more
In 2022, Dr. Onder was the Senate leader in negotiating a package of election reforms, HB1878, that made Missouri’s voting system among the most secure in the nation. Learn more
He also sponsored legislation to expand the Castle Doctrine and to allow exercise of one’s constitutional rights on public transit (“Metro Carry”). Learn more
Dr. Onder was a leader in the Senate leading to the passage of Constitutional Carry in 2016 and the Second Amendment Preservation Act in 2019. Learn more
Dr. Onder sponsored and passed HB1549 in 2008 to ban Sanctuary Cities, crack down on public employers and contractors who hire illegal aliens, and end catch-and-release of illegal aliens. Learn more
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