Results of 2018 Missouri Proposition A by county. Data from https://www.nytimes.com/elections/results/missouri-right-to-work-vote-proposition-a.

Support

  90%–100%  80%–90%  70%–80%  60%–70%  50%–60%
Tie

  Exact tie
Oppose

  50%–60%  60%–70%  70%–80%  80%–90%  90%–100%
Own work
Elli