They do not guarantee minority representation and allow a group of voters (a voting bloc) to ensure that only their preferred candidates are elected.
Block voting may be also associated with the concept of winner-take-all representation in multi-winner electoral systems or the plurality election method.
In contrast, block voting tends to favor the most popular party, resulting in a landslide victory.
The term "block voting" may also refer to a simple plurality election of slates (electoral lists) in multi-member districts.
In some cases, multiple non-transferable voting (MNTV) appears in a runoff or two-round version, as seen in certain local elections in France, where candidates without an absolute majority are thinned out before a second round.
In a block voting election, all candidates compete for m positions, often referred to as the district magnitude.
[3] Two-round block voting is a variation of plurality-at-large where the field of candidates is thinned out before a second round.
A slate of clones of the top preferred candidate will win every seat under both systems, however in preferential block voting this is instead the instant-runoff winner.
This process enables reasonably sized minorities to achieve some representation, preventing a simple plurality from sweeping every seat.
The typical outcome sees the most popular party winning ten seats and forming the ruling administration.