Multiparty or Two-party

Two-party system	Multiparty system
Westminster elections - in 2019, Conservative and Labour combined won 76% of the vote and 87% of the seats in Commons.	The House of Lords - has over 10 parties with no party having a majority. It is common for no party to hold a majority within a multiparty system, such as the House of Lords, contrary to the Parliament elections.
Forming a government - every government since 1945 has been either Labour of Conservative.	Local government elections - in 2026, 172/369 councils were No Overall Control (NOC), with ~900 Green councillors and ~3,200 Liberal Democrat councillors. NOC means that there is no majority which is common in multiparty systems. Source
	Devolved bodies - in Northern Ireland and Scotland, they are not run be either Labour or Conservative. Labour and Conservative don’t run in Northern Ireland - it is instead nationalist and unionist parties.
	Westminster elections - in 2024, Conservative and Labour combined won 60% of the vote, in comparison to 96% in 1951. Traditionally, parties such as Green and Reform would not stand people in every seat, however they do now. As a result, more people are able to vote for them.