Attempt to influence elections by supporting particular political parties and encouraging their members to vote for them
In the 2019 election, trade unions gave £5m in donations to the Labour party
Pressure group support of political parties
Has had mixed results, with trade union influence over the Labour Party being heavily criticised by other parties
Jeremy Corbyn was accused of being 'propped up by the unions'
The amount of influence that pressure groups can have
Pales into insignificance when compared to the influence that business and rich individuals can have
In the same election that Labour raised £5m from the unions, the Conservative Party raised £13m, most of which came from a small number of hyper-rich individuals