I'm actually working on a follow up to build interactive yee diagrams for IRV (version of ranked choice that's getting popular in the US), but Ka-Ping Yee already has a post with some static versions. IRV has some really unpleasant effects that these diagrams help make visible. For instance, in some cases a candidate might want to actively move public opinion away from their position because it makes it more likely that they would win.
http://zesty.ca/voting/sim/