Monmouthshire (UK Parliament constituency)

Monmouthshire (Sir Fynwy) is a constituency of the House of Commons in the UK Parliament, and was first contested at the 2024 United Kingdom general election, following the 2023 Periodic Review of Westminster constituencies. Its current MP is Catherine Fookes, a member of the Labour.

It previously existed as a county constituency of the House of Commons of the Parliament of England from 1536 until 1707, of the Parliament of Great Britain from 1707 to 1801, and of the Parliament of the United Kingdom from 1801 to 1885. It elected two Members of Parliament (MPs).

In 1885 the Monmouthshire constituency was divided to create North Monmouthshire, South Monmouthshire and West Monmouthshire.

Boundaries
The Monmouthshire constituency covered the county of Monmouth, except that from 1832 there was a borough constituency, Monmouth Boroughs, within the county.

The constituency was re-established, as part of the 2023 Periodic Review of Westminster constituencies and under the June 2023 final proposals of the Boundary Commission for Wales for the 2024 United Kingdom general election.

MPs since 2024
Monmouth and Newport East prior to 2024

Elections in the 1870s
Somerset was appointed Comptroller of the Household, triggering a by-election.

Somerset resigned, triggering a by-election.

Elections in the 1850s
Somerset resigned by accepting the office of Steward of the Manor of Hempholme, triggering a by-election.

Elections in the 1840s
Somerset's death caused a by-election.

Somerset was appointed Chancellor of the Duchy of Lancaster, triggering a by-election.

Williams resigned by accepting the office of Steward of the Chiltern Hundreds, triggering a by-election