2018 Jefferson County, Missouri Executive election

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2018 Jefferson County, Missouri Executive election
←  2014 November 6, 2018 2022  →
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NomineeDennis Gannon Jeff Roorda
Party Republican Democratic
Popular vote50,71336,220
Percentage58.34%41.66%
County Executive before election

Ken Waller
Republican

Elected County Executive

Dennis Gannon
Republican

The 2018 Jefferson County, Missouri Executive election took place on November 6, 2018. Incumbent County Executive Ken Waller declined to run for re-election to a third term, instead opting to run for County Clerk. [1] Businessman Dennis Gannon, the former President of the County Port Authority, won the Republican primary over sheriff's deputy Gary Stout, and faced former State Representative Jeff Roorda, the Democratic nominee, in the general election. Gannon defeated Roorda by a wide margin, winning 58 percent of the vote.

Contents

Democratic primary

Candidates

Results

Democratic primary results [3]
PartyCandidateVotes%
Democratic Jeff Roorda 19,572 100.00%
Total votes19,572 100.00%

Republican primary

Candidates

Results

Republican primary results [3]
PartyCandidateVotes%
Republican Dennis Gannon 16,940 65.61%
Republican Gary Stout8,87934.39%
Total votes25,819 100.00%

General election

Results

2018 Jefferson County Executive election [5]
PartyCandidateVotes%
Republican Dennis Gannon 50,713 58.34%
Democratic Jeff Roorda 36,22041.66%
Total votes86,933 100.00%
Republican hold

References

  1. ↑ Thorsen, Leah (July 21, 2018). "After months of tumult in Jefferson County, voters will choose new leader". St. Louis Post-Dispatch . St. Louis, Missouri . Retrieved July 21, 2025.
  2. ↑ Herndon Dunn, Rachael (February 8, 2018). "Roorda ups ante in JeffCo executive race on heels of Revis win". The Missouri Times. Retrieved July 21, 2025.
  3. 1 2 "Election Summary Report - PRIMARY ELECTION - AUGUST 7, 2018 - JEFFERSON COUNTY, MISSOURI - August 7, 2018 Primary". Jefferson County Clerk. August 13, 2018. Retrieved July 17, 2025.
  4. 1 2 "JEFFERSON COUNTY EXECUTIVE: Two Republicans seek bid to become county's next leader". Leader Publications. Festus, Missouri. July 26, 2018. Retrieved July 21, 2025.
  5. ↑ "Election Summary Report - GENERAL ELECTION - NOVEMBER 6, 2018 - JEFFERSON COUNTY, MISSOURI - November 6, 2018 General - Official Election Results". Jefferson County Clerk. 2018. Retrieved July 17, 2025.
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