> In that case, what should the Ventura supporter do? I believe you would say to vote for Humphrey.

Yes, vote for Humphrey. If Ventura then loses by one vote, you still made the best choice with the info you had. 9 times out of 10, or whatever high percentage, the 3rd place poller would've lost even with your vote, in which case you did the best by voting for the lesser of the top 2 evils.

Perhaps Ventura won because Ventura supporters felt that Coleman and Humphrey were equally worse, in which case voting for Ventura wasn't risky.