Besides which, I expect most people to vote for the least worst candidate just so their most worst is less likely to win. Or just leave it blank, which doesn't

Besides which, I expect most people to vote for the least worst candidate just so their most worst is less likely to win. Or just leave it blank, which doesn't count against anyone. This way instead gives them an explicit and easy choice that would be the same for every like-minded voter, that actually counts against the other candidates.