Which voting system is the best? - Alex Gendler?

Voting systems are like rules for a game where everyone picks their favorite team, and we want to find the rule that makes the most fair winner.

Imagine you're at a party with your friends, and you all get to choose your favorite snack: pizza, cake, or ice cream. If everyone votes, and pizza gets the most votes, then pizza wins, just like in a simple voting system called plurality. But sometimes, even if pizza is the most popular, cake might be loved by almost everyone else, and ice cream could be the least hated.

Now imagine you have to pick not just one snack but the best team for a game. A different voting system, like ranked choice voting, lets you say which team you like the most, second-most, and so on, it's like picking your favorite, then your next favorite, all the way down. This can help avoid situations where people vote for one team just to stop another from winning.

Sometimes, no matter how we count votes, the winner might not be the one most people want, it’s like when you all agree that ice cream is the best, but pizza still wins because cake got more votes than ice cream. That's why choosing the best voting system depends on what kind of fairness we're looking for in our game.

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Examples

  1. A school wants to choose a new mascot, and everyone votes for their favorite animal.
  2. A town has three candidates running for mayor, and people can vote for one or more.
  3. Two friends are deciding where to go on vacation by voting between three destinations.

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