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This lesson examines the debate about whether the UK should reform its electoral system, drawing together the arguments for and against replacing FPTP with a more proportional system.
The UK uses FPTP for general elections but uses proportional or hybrid systems for:
This creates an unusual situation where different electoral systems coexist within the same country.
FPTP produces grossly disproportionate results. In many elections, the governing party has won a majority of seats with well under 50% of the vote:
| Election | Governing Party | % Vote | % Seats |
|---|---|---|---|
| 2005 | Labour | 35.2% | 55.1% |
| 2019 | Conservative | 43.6% | 56.2% |
| 2024 | Labour | ~33.7% | ~63.4% |
A proportional system would ensure that seats more accurately reflect votes.
Under FPTP, tens of millions of votes do not contribute to electing a representative. PR systems ensure that almost every vote counts.
PR would make every constituency (or region) competitive, increasing voter motivation and reducing political apathy.
Parties like the Greens, Liberal Democrats, and Reform UK would gain fair representation under PR, reflecting the genuine diversity of political opinion.
Most modern democracies use some form of proportional representation. The UK is an outlier in using a pure plurality system for its main national elections.
The successful use of AMS and STV in Scotland, Wales, and Northern Ireland demonstrates that PR can work in the UK context.
FPTP tends to produce single-party majority governments, which can implement their manifesto without the compromises required by coalition politics. PR often produces coalitions, which can be unstable (as in Italy or Israel).
FPTP provides a direct link between a single MP and their constituency. Voters know who represents them and can hold them personally accountable. PR systems (especially list systems) weaken this link.
Under FPTP, voters can clearly attribute responsibility to the governing party and "throw them out" at the next election. Under PR, coalition governments make accountability more diffuse — which party is responsible for which policy?
FPTP makes it very difficult for extremist parties to win seats. PR lowers the threshold, potentially allowing far-right or far-left parties into Parliament.
FPTP is simple to understand and quick to count. PR systems (especially STV) are more complex and may confuse voters.
The public decisively rejected AV in the 2011 referendum. While AV is not a proportional system, the result is often cited as evidence that voters do not want change.
In coalition governments, small parties can hold the balance of power and extract concessions disproportionate to their support (a "tail wags the dog" effect).
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