Parliamentary constituencies in Merseyside

The ceremonial county of Merseyside, created in 1974, is divided into 16 parliamentary constituencies (sub-classified into 11 of borough type and five of county status affecting the level of expenses permitted and status of returning officer). Three seats cross the county boundary - two are shared with Cheshire and one with Lancashire.

The area, centred on its largest city of Liverpool, has since that year elected a majority of Labour Party MPs moreover since 1997 at least 13 of 15 seats have been held or won by the party at each general election, with the party winning all seats for the first time in 2024. The two other largest parties nationally in England (Conservatives and Liberal Democrats) have to date won intermittently in the two larger seats within the four in the Wirral, the peninsula facing Liverpool, and, until 2024, had alternately represented the seat centred on the coastal strip in and around the leisure resort of Southport; it had not previously sided with the Labour Party since it was created in 1885. The bulk of seats especially towards the east and the centre of Liverpool have not sided with the Conservative Party since that party actively supported the National Labour Organisation (1931–1947).