2018 Jefferson County, Missouri Executive election

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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.

Quick facts Nominee, Party ...
2018 Jefferson County, Missouri Executive election
← 2014
November 6, 2018
2022 →
 
Nominee Dennis Gannon Jeff Roorda
Party Republican Democratic
Popular vote 50,713 36,220
Percentage 58.34% 41.66%
County Executive before election

Ken Waller
Republican

 Elected County Executive

Dennis Gannon
Republican

Close

Democratic primary

Candidates

Results

More information Party, Candidate ...
Democratic primary results[3]
Party Candidate Votes %
Democratic Jeff Roorda 19,572 100.00%
Total votes 19,572 100.00%
Close

Republican primary

Candidates

  • Dennis Gannon, businessman, former President of the Jefferson County Port Authority[4]
  • Gary Stout, county sheriff's deputy, businessman, 2014 Democratic candidate for County Executive[4]

Results

More information Party, Candidate ...
Republican primary results[3]
Party Candidate Votes %
Republican Dennis Gannon 16,940 65.61%
Republican Gary Stout 8,879 34.39%
Total votes 25,819 100.00%
Close

General election

Polling

More information Poll source, Date(s) administered ...
Poll source Date(s)
administered		 Sample
size[a]		 Margin
of error		 Dennis
Gannon (R)		 Jeff
Roorda (D)		 Undecided
Voice Broadcast Corp[5][A] October 2–4, 2018 581 (LV) ± 3.1% 35% 40% 25%
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Results

More information Party, Candidate ...
2018 Jefferson County Executive election[6]
Party Candidate Votes %
Republican Dennis Gannon 50,713 58.34%
Democratic Jeff Roorda 36,220 41.66%
Total votes 86,933 100.00%
Republican hold
Close

Notes

  1. [a]
    Key:
    A – all adults
    RV – registered voters
    LV – likely voters
    V – unclear
Partisan clients
  1. [A]
    Poll sponsored by Roorda's campaign

References

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