At each election, each party gains a certain amount of votes in each region. This is based on many factors - these include ideology and the regional ideology, bill voting percentage, proportion of bills passed and the amount of competition in the election for Head of State (if there is one). The seats are then allocated on a proportional representation basis per region (via the D'Hondt method) in the legislative election, and in the Head of State election (if there is one) slightly different factors give a first-round vote tally, with the top two candidates going forward to a second-round of voting (if the amount of votes by any one candidate did not exceed 50% in the first round).
The amount of seats per region is controllable by the legislature. It is a constitutional option, with three possible values:
- A proportional algorithm that gives a very small advantage to larger regions
- A pseudo-proportional algorithm that gives considerable advantage to smaller regions.
- Equal representation, regardless of regional population.
The amount of seats allocated in total is a fixed value (in current game parameters, it can be any number from 75 to 750, with legislatures having seat amounts at both ends of the scale in some nations).
Although all parties must run in elections for the legislature of the country in question, they may choose not to run a candidate (and/or endorse another candidate if there is no candidate from their own party) or they may be unable to due to an hereditary Head of State.
- For elections outside of gameplay mechanics, see Non-standard elections.