Glossary

 Definitions of common voting and democracy terms. 

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Instant Run-off Voting

A majoritarian variant of Ranked-choice Voting for electing a single winner, either at-large or in districts, in which voters get a single vote and rank candidates in order of preference. To win a candidate must receive a majority of votes. For more detailed explanations, see DODO's RCV 101 page

Non-partisan two-round election system (NTES)

Called “open primaries” by advocates, an open non-partisan two-round election system (NTES) is a system of electing candidates that involves two rounds. 

Plurality voting

A family of voting and vote counting methods in which the candidate(s) with the most votes win, irrespective of whether the candidates have received a majority or some other threshold of votes. The two most common versions of plurality voting in the United States are Single-winner Plurality and Plurality Block Voting

Plurality Block Voting

A multi-winner plurality voting method in which voters select up to as many candidates as there are to be elected and the candidates with the most votes win, irrespective of whether the candidates were selected by a majority of voters (or whether the same voters elect multiple or all candidates). 

Preferential Block Voting

A plurality variant of Ranked-choice Voting for electing multiple winners, either at-large or in districts, in which voters rank candidates in order of preference. To win, a candidate must receive a majority of the votes in that given round of counting.  For more detailed explanations, see DODO's RCV 101 page

Ranked-choice Voting

“Ranked-choice voting” (RCV) is a term used in the United States to describe a family of voting and vote counting methods in which voters rank candidates in order of preference and votes are counted in rounds that sequentially elect or eliminate candidates and progressively draw on more information from voters’ ballots. For more detailed explanations, see DODO's RCV 101 page

Single Transferable Voting

A proportional variant of Ranked-choice Voting for electing multiple winners, either at-large or in districts, in which voters get a single vote and rank candidates in order of preference. To win, a candidate must receive a threshold number of votes. For more detailed explanations, see DODO's RCV 101 page

Single-winner plurality

A single-winner plurality voting method in which voters select a single candidate and the candidate with the most votes win, irrespective of whether the candidate received a majority of votes. Also known as “first-past-the-post” voting or “winner-take-all” voting. 

Top-five primary

A non-partisan two-round election system that uses the “winnowing” preliminary election, to advance five candidates to the general election, and which uses IRV to determine the winner of the general election. 

Top-two primary

A non-partisan two-round election system that uses the “winnowing” preliminary election, to advance two candidates to the general election. In the general election, the candidate that wins a majority of votes wins office.  

Top-four primary

A non-partisan two-round election system that uses the “winnowing” preliminary election, to advance four candidates to the general election, and which uses IRV to determine the winner of the general election.