When I start a poll that’s exactly the result I’m looking for. I’ve never wanted/needed the statistic that you are looking for/wanting and I feel it’s skewed anyways.
If I run a poll and about ice cream and ask about the three traditional flavors and ask what’s your favorite, I’m looking for the overall favorite. Just because a few people have 2 favorites doesn’t mean that chocolate isn’t the overall winner of being the favorite.
Sure, in your example chocolate still “wins” but the percentage makes a difference. You can’t put two 100% totals in a pie (or a 50 and 100). That’s two separate pies which essentially is two separate questions:
Do you like chocolate (yes)
Do you like Vanilla (yes)
Those separate questions would be the vote you are looking for as you’re asking them if they simply like it and want a single percentage for each option.
I can sort of understand the “why” of what you’re trying to get but again, it’s not really feasible and I think would overall confuse people. “Why is this 150% instead of 100%?”