proporz (version 1.5.3)

upper_apportionment: Upper apportionment

Description

In the first step of biproportional apportionment parties are given seats according to the sum of their votes across all districts.

Usage

upper_apportionment(
  votes_matrix,
  district_seats,
  weight_votes = TRUE,
  method = "round"
)

Value

A named list with district seats (for votes_matrix columns) and party seats (for rows).

Arguments

votes_matrix

Vote count matrix with votes by party in rows and votes by district in columns.

district_seats

• Vector defining the number of seats per district. Must be the same length as ncol(votes_matrix). Values are name-matched to votes_matrix columns if both are named.

• If the number of seats per district should be calculated according to the number of votes, a single number for the total number of seats can be used. weight_votes will be ignored, as votes_matrix shows the number of voters. Note that apportioning district seats according to votes is not the general use case.

weight_votes

By default (TRUE) it is assumed that each voter in a district has as many votes as there are seats in a district. Thus, votes are weighted according to the number of available district seats with weight_votes_matrix(). Set to FALSE if votes_matrix shows the number of voters (e.g. because they can only cast one vote for one party).

method

Apportion method that defines how seats are assigned, see proporz(). Default is the Sainte-Laguë/Webster method.

See Also

biproporz(), lower_apportionment()

Examples

votes_matrix = matrix(c(123,912,312,45,714,255,815,414,215), nrow = 3)
district_seats = c(7,5,8)

upper_apportionment(votes_matrix, district_seats)