The Functions and Role of Political Parties

This lesson examines the role and functions of political parties in the UK political system. Political parties are central to representative democracy — they aggregate interests, offer policy programmes, recruit candidates, and provide a mechanism for forming and organising government.

What is a Political Party?

A political party is an organisation of people who share broadly similar political ideas and who seek to win elections in order to gain control of government and implement their policies.

Key features of political parties:

They have a formal membership structure
They develop policy programmes (manifestos) covering a wide range of issues
They stand candidates in elections at local, regional, and national level
They seek to form a government (or opposition) after elections
They have a leadership structure and internal decision-making processes

Functions of Political Parties

1. Representation

Parties represent the views and interests of different sections of society. Historically, Labour represented the working class and the Conservatives represented the middle and upper classes — though this class alignment has weakened significantly (a process known as class dealignment).

2. Policy Formulation

Parties develop detailed policy programmes that they present to the electorate in their manifestos. This gives voters a clear choice between different approaches to governing the country.

Party	Example Policy Area
Conservative	Lower taxes, free-market economics, tough on crime
Labour	Public investment, workers' rights, NHS funding
Liberal Democrats	Civil liberties, electoral reform, education
Green	Climate action, social justice, democratic reform

3. Recruitment of Political Leaders

Parties identify, train, and select candidates for elected office. The selection process for parliamentary candidates varies between parties:

Labour uses a system of local party selections, sometimes with all-women shortlists (AWS) to increase female representation
The Conservatives allow local associations to select from a centrally approved list
The Liberal Democrats use a membership ballot system

4. Organisation of Government

The party that wins a general election forms the government. The PM is the leader of the largest party (or coalition). Parties provide the structure for:

Cabinet government (senior ministers are drawn from the governing party)
The legislative programme (the government introduces bills based on its manifesto)
Parliamentary discipline (the whip system ensures MPs vote with their party)

5. Providing Opposition

The second-largest party becomes the Official Opposition, with the Leader of the Opposition and a Shadow Cabinet. The opposition's role is to:

Scrutinise government policy and legislation
Hold the government to account through debates, questions, and committees
Offer an alternative government-in-waiting

6. Political Education and Participation

Parties inform and educate the public about political issues through campaigns, media appearances, and public meetings. They provide a vehicle for ordinary citizens to participate in politics by joining, volunteering, and standing for office.

Internal Party Democracy

A key debate in UK politics is whether parties are internally democratic — i.e., whether ordinary members have a genuine say in party policy, leadership, and candidate selection.

Arguments that parties are internally democratic:

Members can vote in leadership elections (all major parties now use some form of membership ballot)
Members help select parliamentary candidates
Party conferences debate and (in theory) set policy
Grassroots members campaign and fundraise

Arguments that parties are NOT internally democratic:

Party leaders and the parliamentary party often dominate policy-making
The whip system pressures MPs to follow the party line
Candidate selection can be centrally controlled (e.g. parachuting candidates into safe seats)
Conference votes are sometimes stage-managed and symbolic

Exam Tip: When discussing the functions of parties, always link them to wider questions about the health of democracy. If parties fail to represent diverse views or allow genuine internal debate, this has implications for the democratic system as a whole.

Are Parties Still Relevant?

Arguments that parties remain essential:

They are the only mechanism for forming a stable government
They aggregate diverse interests into coherent policy programmes
They provide accountability (voters can judge the governing party's record)
They structure parliamentary debate and legislation

Arguments that parties are in decline or less relevant:

Party membership has fallen dramatically since the mid-20th century
Class dealignment means voters are less loyal to a single party
Pressure groups and social movements increasingly fill the role of political representation
Public trust in political parties is low

Key Terms

Term	Definition
Political party	An organisation seeking to win elections and form government
Manifesto	A published statement of a party's policies and programme for government
Whip system	The mechanism by which parties enforce discipline among their MPs
Shadow Cabinet	The opposition party's team of senior spokespeople
Class dealignment	The weakening of the traditional link between social class and voting behaviour
All-women shortlist (AWS)	A candidate shortlist restricted to women to increase representation
Internal democracy	The extent to which party members have a say in decisions

Summary

Political parties perform essential functions in representative democracy: representation, policy formulation, leadership recruitment, organising government, providing opposition, and political education.
There is ongoing debate about whether parties are internally democratic.
Party membership and class alignment have declined, raising questions about the continued relevance of traditional parties.
Despite these challenges, parties remain the primary mechanism for forming government and structuring democratic politics.