Bullet voting, also known as single-shot voting and plump voting, is a voting tactic, usually in multiple-winner elections, where a voter is entitled to vote for more than one candidate, but instead votes for only one candidate.
A voter might do this because it is easier than evaluating all the candidates or as a form of tactical voting. Voters can use this tactic to maximize the chance that their favorite candidate will be elected while increasing the risk that other favored candidates will lose. A group of voters using this tactic consistently has a better chance of one favorite candidate being elected.
Election systems that satisfy the later-no-harm criterion discourage any value in bullet voting. These systems either do not ask for lower preferences (like plurality) or promise to ignore lower preferences unless all higher preferences are eliminated.
Some elections have tried to disallow bullet voting and require the casting of multiple votes because it can empower minority voters. Minority groups can defeat this requirement if they are allowed to run as many candidates as seats are being elected.
Plurality voting only allows a single vote, so bullet voting is effectively mandatory. Voting for more than one candidate is called an overvote and will invalidate the ballot.
In contrast, approval voting allows voters to support as many candidates as they like, and bullet voting can be a strategy of a minority, just as in multiple-winner elections (see below). Such voting would be for their sincere favorite, so it would not result in the same pathologies seen in plurality voting, where voters are encouraged to bullet vote for a candidate who is not their favorite. Bucklin voting and Borda voting used ranked ballots, and both allow the possibility that a second choice could help defeat the first choice, so bullet voting might be used to prevent this.
Instant-runoff voting and contingent vote allow full preferences to be expressed and lower preferences have no effect unless the higher ones have all been eliminated.
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The Borda count is a family of positional voting rules which gives each candidate, for each ballot, a number of points corresponding to the number of candidates ranked lower. In the original variant, the lowest-ranked candidate gets 0 points, the next-lowest gets 1 point, etc., and the highest-ranked candidate gets n − 1 points, where n is the number of candidates. Once all votes have been counted, the option or candidate with the most points is the winner.
An electoral system or voting system is a set of rules that determine how elections and referendums are conducted and how their results are determined. Electoral systems are used in politics to elect governments, while non-political elections may take place in business, non-profit organisations and informal organisations. These rules govern all aspects of the voting process: when elections occur, who is allowed to vote, who can stand as a candidate, how ballots are marked and cast, how the ballots are counted, how votes translate into the election outcome, limits on campaign spending, and other factors that can affect the result.
Plurality block voting, also known as plurality-at-large voting, bloc vote or block voting (BV) is a non-proportional voting system for electing representatives in multi-winner elections. Each voter may cast as many votes as the number of seats to be filled. The usual result when the candidates divide into parties is that the most popular party in the district sees its full slate of candidates elected in a seemingly landslide victory.