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Who is my U.S. representative in MO-03?

Captured 2026-07-15 13:27:04 UTC Model ChatGPT Source page 
Your U.S. representative for Missouri’s 3rd Congressional District (MO-03) is Robert F. Onder Jr. (Republican). 
House of Representatives
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Rep. Onder represents parts of eastern and central Missouri, including areas such as St. Charles County and surrounding communities. He serves in the U.S. House of Representatives. 
House of Representatives

If you want to confirm your district by your exact address or ZIP code, I can help check that too—some ZIP codes cross district boundaries. 
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The response correctly identifies Robert F. Onder Jr. as the U.S. representative for MO-03, matching the ground truth of Robert Onder.

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Ground truth

representative: Robert Onder

clerk.house.gov 100 as of 2026-07-07

https://clerk.house.gov/xml/lists/MemberData.xml

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