A lot of the other countries that do not have RCV also have one or more of the following features that help keep a healthy number of parties (not an exhaustive

A lot of the other countries that do not have RCV also have one or more of the following features that help keep a healthy number of parties (not an exhaustive list at all): - parliamentary system - proportional representation [0] (e.g. party list systems, mixed member proportional representation [1]) - two-round voting [2] (like France) RCV is not the only way, but it is _a_ way to foster viable 3rd parties. [0] https://en.wikipedia.org/wiki/Proportional_representation#PR_electoral_systems https://en.wikipedia.org/wiki/Proportional_representation#PR... [1] https://en.wikipedia.org/wiki/Mixed-member_proportional_representation https://en.wikipedia.org/wiki/Mixed-member_proportional_repr... [2] https://en.wikipedia.org/wiki/Mixed-member_proportional_representation https://en.wikipedia.org/wiki/Mixed-member_proportional_repr...