Results of 1990 Arkansas Amendment 3 by county. Data from https://www.sos.arkansas.gov/uploads/elections/1990_Election_results.pdf. Only one vote was cast in Marion County, so it is marked as "no data" as it seems the referendum was not on the ballot in that county.

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