Range voting and approval voting are closely related; approval voting is just the limiting case of range voting where there are only two values on the scale. M

Range voting and approval voting are closely related; approval voting is just the limiting case of range voting where there are only two values on the scale. My take is that range voting is useful when you have a relatively small number of voters, but once that number gets into the thousands, its advantages over AV fade. Instead of one voter rating one candidate a 7, say, instead what you have is 100 voters of whom 70 vote yes on the candidate and 30 vote no. Once you have enough voters that that effect is statistically reliable, there's no further need for the added complexity of allowing more scale values. And as you add scale values, tampering gets even easier. How would we notice it if someone went in and changed a bunch of people's 6 votes to 7s?