There are different "alternative vote" organizations, which have different favored reforms. FairVote is, indeed, the biggest advocate of IRV, and of multi-memb

There are different "alternative vote" organizations, which have different favored reforms. FairVote is, indeed, the biggest advocate of IRV, and of multi-member districts. The Center for Election Science (https://www.electionscience.org/ https://www.electionscience.org/) favors a switch to approval voting, and AFAIK doesn't have an opinion on multi-member districts.