Indeed, multi votes highlights the fact that math formula used in RD polls is wrong because it divides the number of votes by the number of VOTERS instead of TOTAL VOTES.Because multi choice is available.
By definition a percentage is...per 100 and the sum of all parts = 100
As said in my previous post, even with multi choice, if you divide the number of votes for 1 game by the total of votes then you get a real percentage, and the sum of all games will be 1.0 = 100/100 = 100%