In political science, Duverger’s law (/ˈduvərʒeɪ/ DOO-vər-zhay) holds that in political systems with only one winner (as in the U.S.), two main parties tend to emerge with minor parties typically splitting votes away from the most similar major party.
You can elect multiple reps, the quota threshold is just different
Importantly you do need the multi member districts to get the full benefit of these kinds of voting systems and prevent duvergers law
In political science, Duverger’s law (/ˈduvərʒeɪ/ DOO-vər-zhay) holds that in political systems with only one winner (as in the U.S.), two main parties tend to emerge with minor parties typically splitting votes away from the most similar major party.