Coverage: March 2026

This website provides result data for all general elections and by-elections to the House of Commons since the 2010 general election.

The 2010 general election was contested on boundaries introduced in England, Wales and Northern Ireland on the dissolution of the 54th Parliament. This site includes notional results for the 2005 general election, had the 2005 general election been contested on the 2010 boundaries.

The 2024 general election was contested on boundaries introduced across the UK on the dissolution of the 58th Parliament. This site includes notional results for the 2019 general election, had the 2019 general election been contested on the 2024 boundaries.

Our boundary set information dates back to 26th November 1918. The legislation establishing these boundaries is complete, back to the Representation of the People Act 1918.