Runoff voting

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Runoff voting can refer to:

  • Two-round system, a voting system used to elect a single winner, whereby only two candidates from the first round continue to the second round, where one candidate will win.
  • Instant-runoff voting, an electoral system whereby voters rank the candidates in order of preference.
  • Contingent vote, an instant-runoff (preferential, single round) version of the two-round system.
  • Exhaustive ballot, a reiterative voting system, whereby rounds of voting continue (with or without elimination) until one candidate achieves a majority, also called repeated balloting.