SAN FRANCISCO (KGO) -- San Francisco has been using ranked-choice voting since 2004. The idea is to avoid a costly run-off election and to encourage a winner who has broad support.
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But many people are still confused about how this type of voting works.
This is what San Francisco voters will see when they vote for mayor -- the ballot asks you to pick a first choice, second choice and third choice.
But once you pick them, then what? How does the ranked choice voting algorithm come up with the winner?
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Watch the video above for an explanation from ABC7 News Anchor Kristen Sze.
Take a look at the latest stories and videos about the election.