Proportional Representation (PR) electoral systems aim to allocate seats in a legislature in direct proportion to the votes received by each party. The fundamental principle is fairness, ensuring that a party winning, say, 10% of the national vote receives roughly 10% of the seats in parliament.
There are several variations of PR, but the most common are:
- Party-list PR: Voters choose a party, and parties are awarded seats based on their vote share. Parties rank candidates on a list, and seats are filled from the top down. This system can enhance party discipline as candidates are reliant on the party’s ranking for election. Some variations feature open lists, allowing voters to also indicate a preference for individual candidates within a party.
- Mixed-Member Proportional (MMP): Voters cast two ballots: one for a local representative (similar to a single-member district system) and another for a party list. A proportion of seats are filled using party-list PR to compensate for any disproportionality arising from the district results, ensuring overall proportionality in the legislature. This system offers a blend of local representation and proportional outcomes.
- Single Transferable Vote (STV): Voters rank candidates in order of preference. To be elected, a candidate must reach a quota. If a candidate exceeds the quota, their surplus votes are transferred to the voter’s next preferred candidate. Candidates with the fewest votes are eliminated, and their votes are also transferred. This process continues until all seats are filled. STV provides voters with more choice and allows for the election of candidates from different parties in the same district.
Advantages of PR systems:
- Fairness and Representation: PR ensures that smaller parties have a better chance of winning seats, leading to a more representative legislature and a broader range of perspectives in government.
- Higher Voter Turnout: Voters are more likely to participate when they believe their vote will make a difference, even if their preferred party is not one of the largest.
- Reduced Wasted Votes: Fewer votes are “wasted” on losing candidates or parties, as even smaller parties can gain representation.
- Coalition Governments: PR systems often lead to coalition governments, which can encourage compromise and consensus-building.
Disadvantages of PR systems:
- Coalition Instability: Coalition governments can be less stable and prone to infighting, leading to frequent elections or policy gridlock.
- Lack of Clear Accountability: It can be difficult to hold specific individuals accountable for policy decisions in coalition governments.
- Extremist Parties: PR systems may allow extremist parties to gain representation, potentially influencing the political discourse.
- Weakened Link Between Voters and Representatives: In party-list systems, the link between voters and individual representatives can be weaker than in single-member district systems.
The choice of electoral system is a crucial decision with significant implications for the composition and functioning of government. PR systems, with their emphasis on fairness and representation, offer a viable alternative to majoritarian systems, but also come with their own set of challenges.