Funny, just last week I was thinking about the meaning of “voting power” in an immediate and real-world application: the National Popular Vote Interstate Compact (NPVIC). They are faced with combining the “number of votes” from different states under different voting methods. If most states were using choose-one Plurality Voting (COPV), but some states were using IRV or Approval Voting, would voters in either of the two latter cases have more or less voting power? Could anyone protest that an AV state would have an unfair advantage? Or that some categories of voters would have an unfair advantage (more than they already do)?