The UK calls itself a two-party system, and by seats it still is. By votes, 2024 told a different story: Labour won 411 seats on 33.7% of the vote - the lowest winning share in modern history - while Reform UK's 14.3% bought five seats. This walk-through covers what parties do and how they are paid for, the two-party system and the pressure on it, the minor parties, and the funding reform debate - then finishes with a worked 30-mark essay. Three short quizzes break the tour up.
Political parties are the machinery of UK representative democracy: they recruit and select candidates, fight elections, form governments and oppositions, and turn millions of individual preferences into a handful of programmes a voter can choose between. The spec (P1.2) asks four things of you: the functions and features of parties and how they are funded; the development of the three established parties; the importance of minor parties, with two studied in depth; and the party system debate - whether the UK is still a two-party system at all. The 2024 election sharpened every one of those debates, which is why this topic is one of the most live on Paper 1.
Scroll - each function lights with what it means and the evidence that tests it.
Spec point P1.2.1.a asks for the functions and features of parties in the UK's representative democracy. The standard list has five functions; each comes with a live debate about how well parties still perform it. Scroll through; the figure beside you holds the five function cards with the one you are reading lit.
Representation, participation, recruitment, policy formulation and governing. For each one, learn the function, the evidence that parties still do it, and the evidence that they are doing it worse - that pairing is what the 30-marker rewards.
A party offers a package: pick Labour, the Conservatives, the Liberal Democrats, Reform UK or the Greens and you are choosing a whole direction for the country, not a single policy. The winning party then claims a mandate - the authority to carry out its manifesto. The test: with the two main parties' combined vote share falling to around 57% in 2024, the lowest in modern history, a growing share of voters feel represented by neither.
Joining a party is one of the spec's standard participation routes, and members now choose leaders: the 2022 Conservative leadership contest saw the membership pick Truss over Sunak by 81,326 votes to 60,399 - choosing the candidate who had lost among MPs. That is real power for ordinary members, and a structural division between MPs and members in one result. The counter: party membership is small relative to the electorate, so the participation parties offer is deep for a few rather than broad for the many.
Every PM since 1945 has come from one of the two main parties - the 2022 Pearson mocks mark scheme uses exactly this point as evidence of two-party dominance. Parties screen candidates, build careers and supply ministers. The test: leadership churn. The Conservatives produced five Prime Ministers between 2016 and 2024, three removed by their own party - recruitment working, but discipline failing.
The manifesto is the contract: it defines the mandate, and the Salisbury Convention protects manifesto bills in the Lords. The test from the minor parties: policy agendas can now be set from outside. UKIP in 2015 won 12.6% of the vote and one seat, yet forced the EU referendum that reshaped British politics - policy formulation without office.
Westminster procedure is built around the government-versus-opposition binary - the Opposition gets Short money, opposition days and the right of reply. The test: from 2010-15 the UK was governed by a coalition, and after 2017 by a confidence and supply agreement with the DUP - the 2022 mocks mark scheme treats both as evidence that FPTP can no longer guarantee single-party rule.
P1.2.1.b adds the money question: how are parties funded, and what are the consequences? UK parties run on four main sources. Membership fees and small donations; large private donations from wealthy individuals, businesses and trade unions; Short money, the public grant that supports opposition parties in the Commons, with Cranborne money as its Lords equivalent; and state grants for policy development work. The regulatory framework is PPERA 2000 - the Political Parties, Elections and Referendums Act - which caps campaign spending, requires donations to be declared, and created the Electoral Commission to police it.
Scroll - each stage of the argument lights with its evidence.
P1.2.4.a asks about the development of a multi-party system and its implications for government. The 2022 Pearson mocks mark scheme set the question directly - evaluate the view that the UK does not have a multi-party system - and its two columns are the debate you need. The honest answer is that the UK is two things at once: a two-party system by seats and executive power, and a multi-party system by votes, devolved government and agenda-setting. Scroll through the argument.
By seats, Westminster is still a two-party legislature. By votes, 2024 was the most multi-party result in modern history. The strong essay holds both facts and explains the gap: the electoral system.
The current electoral system works in the interests of two parties: FPTP rewards established support, and the vast number of safe seats locks the pattern in. Prime Ministers and governments have come from only two parties since 1945. From 1979-97 and 1997-2010, one party - let alone two - dominated the Commons. And the organisational point: the two main parties' finance, staff and mass organisational capacity is an asset no challenger can replicate. After 2024, Labour and the Conservatives still held 532 of 650 seats - over 80%.
Out of the four governments before 2024, two needed the support of other parties: the 2010-15 coalition and the 2017 confidence and supply agreement with the DUP - evidence that FPTP can no longer guarantee single-party rule. In the devolved regions, multi-party systems have operated for decades, produced by different voting systems. Other parties forge the big issues - Brexit, Scottish independence, the environment. And the SNP's breakthrough showed that major constitutional questions cannot be controlled by the two main parties.
The numbers: Labour 33.7% and 411 seats (a 174-seat majority on a third of the vote); the Conservatives 23.7% and 121 seats; the Liberal Democrats 12.2% and 72 seats; Reform UK 14.3% and 5 seats; the Greens 6.7% and 4 seats; the SNP 2.5% and 9 seats. Reform's 14.3% was the biggest UK third-party vote share since the SDP-Liberal Alliance era, and the combined Conservative-plus-Labour share of around 57% was the lowest in modern history. The votes are dispersed; the seats are not. FPTP is what keeps the formal two-party label alive at Westminster.
Under AMS and STV, the devolved chambers have been multi-party from the start: the SNP has governed Scotland since 2007, Plaid Cymru is a major force in Wales, and Sinn Fein has been the largest party in the Northern Ireland Assembly since 2022. The 2022 mocks mark scheme attributes the devolved multi-party systems directly to the different voting systems and grassroots political differences at regional level - which makes the party system question an electoral systems question in disguise.
If multi-party voting continues under FPTP, three outcomes are possible: manufactured majorities like 2024, where a third of the votes delivers two-thirds of the seats; hung parliaments and deals like 2010 and 2017, when the vote splits the right way; or sudden landslide reversals, because a broad coalition of voters with soft commitment can dissolve as fast as it formed. The implications question is asking you to reason through that instability.
Scroll - each party lights with its trajectory and what it proves.
P1.2.3 asks for the importance of other parties, with two studied in depth - Reform UK and the Greens are the most current pairing, with the SNP, Plaid Cymru and the Northern Ireland parties as the regional set. The thread running through all of them: minor-party significance has grown most where the rules permit it - devolved chambers under proportional systems, referendums and the agenda of the major parties - and least where FPTP suppresses it, the Commons seat count. Scroll through the cases.
Seats at Westminster, government in the devolved nations, coalition bargaining power, and agenda-setting from outside. Each minor party is strong evidence for at least one route - learn which.
The SNP is the strongest case of a minor party becoming a governing party - it has run Scotland since 2007, and its 2015 earthquake took 56 of Scotland's 59 Westminster seats. It put independence on the national agenda through the 2014 referendum and, after 2017, pushed Brexit's constitutional question into every Cabinet calculation. The fall matters as much: after Sturgeon's 2023 resignation and the Yousaf-Swinney transitions, the 2024 collapse handed Labour most of Scotland - proof that minor-party strength can be fragile too.
Reform's 2024 vote share was the biggest third-party share since the SDP era - converted by FPTP into five seats, including Clacton. The influence runs through the Conservative Party: Reform drew votes, ideas and then MPs from the Conservative right - Lee Anderson defected in March 2024, and a wave followed after the election, including Danny Kruger in September 2025 and Robert Jenrick, the runner-up to Badenoch in the 2024 leadership contest, in January 2026. A party can reshape its rival without ever sitting on the government benches.
The Greens quadrupled their Commons presence in 2024: Carla Denyer (Bristol Central), Adrian Ramsay (Waveney Valley), Sian Berry (Brighton Pavilion) and Ellie Chowns (North Herefordshire). Their longer influence is on the agenda - shifting Labour and Liberal Democrat environment policy - and in devolved politics, where Greens have held ministerial office in the Scottish Government. A strong P1.2.3.b in-depth choice alongside Reform UK.
The 2010-15 coalition is the single most consequential episode in modern minor-party significance: a third party held ministerial office and set policy across the constitutional reform agenda - the AV referendum, fixed-term parliaments, Lords reform plans - plus tuition fees and NHS structure. No comparable episode exists in postwar Britain. In 2024 the party showed the other lesson: 72 seats on 12.2% of the vote, because concentrated support converts under FPTP where spread support does not.
UKIP is the purest agenda-setting case: founded in 1993, it never came close to power, yet the fear of its popularity drove Cameron's referendum pledge - the 2024 Pearson mark scheme states the EU referendum was held to thwart UKIP. One seat, and the biggest constitutional change in a generation. When the minor parties question asks about significance, this is the example that breaks the seats-equals-significance assumption.
Westminster remains a two-party legislature at executive level: no minor party has formed a government since 1922, government formation is still a Labour-or-Conservative question, and the 2010-15 coalition is the only postwar exception. FPTP under-rewards minor parties regardless of vote share - Reform's 14.3% for 5 seats proves it. Influence has grown everywhere except where executive power lives.
How the topic is tested, with approaches to the recurring questions.
Political parties appears in Paper 1 as a 30-mark question - at Q1 with a source, or at Q2 as an essay. Both split AO1/AO2/AO3 at 10/10/10. The rules: two views weighed in a balanced way with a sustained line of argument; a one-sided answer is capped at Level 2. Structure by theme, not by party - a party-by-party tour is the inventory structure examiners mark down. Conclusions justify rather than summarise, and post-2024 evidence is what 2026 sittings are expected to carry.
Recurring 30-mark questions to practise.
Approach: The Part 2 debate is the plan. Para 1 - the seats case: FPTP works in the interests of two parties, every PM since 1945, safe seats and organisational dominance, against the 2024 vote dispersal. Para 2 - the strain case: coalition 2010, the DUP deal 2017, and the devolved multi-party systems the mark scheme attributes to different voting systems. Para 3 - agenda-setting: Brexit, independence and the environment forged outside the two main parties. Judgement: multi-party by votes and agenda, two-party by seats and executive power - and say which test matters more for the question asked.
Approach: The worked essay below answers it in full - transparency, donor influence and the two-party advantage against the PPERA safeguards and the problems of state funding.
Approach: Anchor the comparison around the mid-1990s baseline, when minor parties were politically marginal. Para 1 - seats and office: the 2010-15 coalition (unique in postwar Britain), SNP government in Scotland since 2007, the 2024 results. Para 2 - agenda-setting: UKIP forcing the referendum, Reform reshaping the Conservative right. Para 3 - the limit: no minor party has formed a government since 1922 and FPTP still suppresses the seat count. Judgement: yes to a large extent - significance has grown most where the rules permit it. The full pack works this question end to end.
Approach: Theme by function using the Part 1 pairings. Para 1 - representation: the mandate model against the 57% combined share of 2024. Para 2 - participation and recruitment: members choosing leaders (Truss 2022) against the smallness of memberships and the leadership churn. Para 3 - governing: the binary that still runs Westminster against the coalition and confidence-and-supply episodes. Judgement: parties still perform the functions no other body can - the question is how well, and 2024 says less well than at any point in modern history.
Judgement. The current system of party funding should be reformed. The defence rests on PPERA's safeguards and the costs of state funding, and both points are real - but neither answers the central charge: voters choose between parties without knowing who paid for them, donors can expect a return, and the two largest parties compete on a track they built for themselves. Reform means caps and pre-election transparency first, with state funding as the harder second question. A system that is merely better-policed than it was in 1999 is not the same as a fair one.
Political party. An organisation that contests elections on a shared programme with the aim of winning office - distinct from a pressure group, which seeks influence rather than office.
Mandate. The authority a winning party claims to carry out its manifesto. The Salisbury Convention protects manifesto bills in the Lords.
Manifesto. The programme a party publishes before an election - the basis of the mandate and the contract voters judge a government against.
Two-party system. A system in which two parties dominate government and seats. By seats Westminster still is one: Labour and the Conservatives held 532 of 650 seats after 2024.
Multi-party system. A system in which several parties compete with a realistic role. The devolved chambers are multi-party; by votes, so was the 2024 general election.
Short money. Public funding for opposition parties in the Commons. Cranborne money is the Lords equivalent.
PPERA 2000. The Political Parties, Elections and Referendums Act - spending caps, declared donations and the Electoral Commission.
State funding. The main reform proposal: public money for parties in place of private donations. Proposed by review, never legislated.
Minor party. A party outside the big two. The spec requires two studied in depth - Reform UK and the Greens are the most current pairing.
Reform UK. Founded 2018 as the Brexit Party; 14.3% and 5 seats in 2024 - the biggest third-party vote share since the SDP era - and the destination of a wave of Conservative defections.
The Greens 2024. 6.7% and four seats - Denyer, Ramsay, Berry, Chowns - their largest result ever.
SNP trajectory. Every Holyrood election won 2007-24; 56 Westminster seats in 2015; collapsed to 9 in 2024.
The 2010-15 coalition. The Conservative-Liberal Democrat government - the only postwar case of a third party holding ministerial office, and the strongest minor-party significance evidence.
Agenda-setting. Shaping what the major parties must respond to without holding office - UKIP and the EU referendum is the standard case.
Manufactured majority. A Commons majority far larger than the vote share behind it - 33.7% of votes becoming a 174-seat majority in 2024.