Plurality block voting

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Plurality block voting, also known as plurality-at-large voting, bloc vote^[1] 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.^[2] 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.

The term "plurality at-large" is in common usage in elections for representative members of a body who are elected or appointed to represent the whole membership of the body (for example, a city, state or province, nation, club or association). Where the system is used in a territory divided into multi-member electoral districts the system is commonly referred to as "block voting" or the "bloc vote". These systems are usually based on a single round of voting, but can also be used in the runoffs of majority-at-large voting, as in some local elections in France, where candidates who do not receive an absolute majority must compete in a second round.

The party-list version of plurality block voting is party block voting (PBV), also called the general ticket, which also uses a simple plurality election in multi-member districts. In such a system, each party puts forward a slate of candidates, a voter casts just one vote, and the party winning a plurality of votes sees its whole slate elected, winning all the seats.