apportion provides different apportionment methods for allocating seats across states. These methods are also sometimes used for allocating seats by votes in proportional representation systems.

You can install apportion with:

install.packages("apportion")

apportion has several apportionment methods, each of which take two required arguments:

• size: the number of seats to apportion across units
• pop: population sizes or proportions for each unit

Several methods also support an init argument for applying apportionment on top of an initial allocation.

library(apportion)
## basic example code
data('state_2020')

app_huntington_hill(size = 435, pop = state_2020$pop)
#>  [1]  7  1  9  4 52  8  5  1 28 14  2  2 17  9  4  4  6  6  2  8  9 13  8  4  8
#> [26]  2  3  4  2 12  3 26 14  1 15  5  6 17  2  7  1  9 38  4  1 11 10  2  8  1

Implemented methods:

• the Adams method (app_adams())
• the Balinski Young method (app_balinski_young())
• the Dean method (app_dean())
• the D’Hondt (Jefferson, greatest divisors) method (app_dhondt() and app_jefferson())
• the Hamilton-Vinton (Hare) method (app_hamilton_vinton())
• the Huntington-Hill (Equal proportions) method (app_huntington_hill())
• the Webster (Sainte-Laguë) method (app_webster())