Osmack, Koenig Vie for Open St. Louis County Council Seat
Democrat Mark Osmack and Republican Andrew Koenig are candidates for the open 3rd District seat on the St. Louis County Council, a district that spans from Chesterfield to the Jefferson County border. This race is considered competitive as the incumbent…
St. Louis, MO, October 14, 2026 —
Democrat Mark Osmack and Republican Andrew Koenig are candidates for the open 3rd District seat on the St. Louis County Council. The district spans from Chesterfield to the Jefferson County border, and the contest is considered competitive.
The seat is open because the incumbent is not seeking reelection. The information provided does not identify the incumbent or give a reason for the decision.
The district’s boundaries extend across a broad area, from Chesterfield to the Jefferson County line. No further details about the communities included in the district were provided.
Information available about the race does not include the candidates’ backgrounds, policy positions, campaign platforms or statements. It also does not specify the election date, the timing of any upcoming campaign events, or details about how the race is being assessed as competitive. Those details were not provided and cannot be established from the information at hand.
With the incumbent not seeking another term, Osmack and Koenig are the candidates identified for the open seat. Further information about their campaigns and the election was not included in the trend summary.
Story summarized from the original created by Rachel Lippmann on www.stlpr.org, see more information here.
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