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Ranked-Choice Voting (RCV)

OpenSTV implements voting methods where votes consist of rankings of one or more candidates. The terms instant runoff voting, the single transferable vote, and ranked-choice voting (among others) are often used to describe these voting methods.

Instant runoff voting (IRV) is a voting method where ranked ballots are used to simulate a series of runoff elections. IRV is most often used to elect a single candidate but could also be used to elect more than one candidate with a kind of proportional representation.

The single transferable vote (STV) is a voting method where ranked ballots are used to provide proportional representation by transferring surplus votes from winning candidates and transferring votes from losing candidates. When STV is used to elect a single candidate, it is equivalent to IRV.

Ranked-choice voting (RCV) is a relatively new term to describe elections using the single transferable vote or instant runoff voting. San Francisco uses ranked-choice voting to describe its instant runoff voting elections, and Minneapolis uses ranked-choice voting to describe both its instant runoff voting and single transferable vote elections.

OpenSTV also implements a number of other methods based on ranked ballots, including Condorcet voting.

  • Instant Runoff Voting (IRV)
  • Single Transferable Vote (STV)
  • Other Methods
  • Download Ballot Files
Instant Runoff Voting (IRV) ›
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Who uses OpaVote and OpenSTV?

The Liberal Democrats Liberal Youth used OpaVote to elect its officers in September 2014.

Victorian Young Greens used OpaVote to elect its officers in September 2014.

The Residence Hall Association of UNC-Chapel Hill used OpaVote to elect its community governors in August 2014.

The Property Records Industry Association used OpaVote to elect its Board of Directors in August 2014.

The University of Sheffield used OpaVote for an election in July 2014.

The Liberal Democrats Liberal Youth used OpaVote to elect its officers in July 2014.

The Episcopal Diocese of Massachusetts used OpenSTV for an election in July 2014.

The Social Liberal Forum used OpaVote to elect its council in July 2014.

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  • Question about Condorcet option
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Ranked-Choice Voting (RCV)

  • Instant Runoff Voting (IRV)
  • Single Transferable Vote (STV)
  • Other Methods
  • Download Ballot Files
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