Results of the 2006 South Dakota Amendment C by county
 Data source: https://edition.cnn.com/ELECTION/2006//pages/results/states/SD/I/02/county.000.html https://edition.cnn.com/ELECTION/2006//pages/results/states/SD/I/02/county.001.html https://edition.cnn.com/ELECTION/2006//pages/results/states/SD/I/02/county.002.html


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
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