Rules
& Outcomes
Not So Simple
Majorities
Procedures
Explained
Examples Sources
 
Voting Procedures Briefly Explained

Students of voting have devised many carefully considered ways to democratically sum up voters' preferences. Majoritarian methods apply or extend simple majority rule to two or more alternatives. Positional methods take into account some or all information about voter preferences. Some positional methods consider voters' first choices only (e.g., plurality voting). Some account for multiple but incomplete expressions of voters' preferences (e.g., approval voting). Some use voters' full rankings of all alternatives (e.g., scoring methods like the Borda count). [1] The table describes some important examples:

Majoritarian Methods
Simple Majority Rule
  • Candidate with at least one half plus one first place votes wins
Condorcet Method (Pairwise Comparison) [2]
  • Candidate who beats all other alternatives in all pair-by-pair comparisons wins
Positional Methods
Plurality Rule
  • Candidate with more votes than any other (whether or not a majority) wins
Instant Runoff
  1. Voters rank all candidates
  2. Candidate with fewest first place votes is dropped from all rankings; for those who placed that candidate first, their second choice becomes their first choice; candidates are dropped and votes redistributed until two candidates remain
  3. Candidate with most first place votes wins
Borda Count [3]
  1. Voters rank all N candidates with each voter's top choice getting N minus one points, second choice N minus two points, etc.
  2. Candidate with highest point total wins
Approval Voting
  1. Voters vote for as many (or few) candidates as they wish
  2. Candidate with most votes wins

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Footnotes: Utilitarian methods, Condorcet, Borda. (full footnotes)