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Constituency

Ynys Môn

At a glance

Ynys Môn is a UK parliamentary constituency in Wales, currently represented in the House of Commons by Llinos Medi, a Plaid Cymru MP. Llinos Medi has represented the seat since 4 Jul 2024. At the 2024 general election it was ultra-marginal, won by a majority of 637 votes (2%), ranking #46 most marginal of 650 seats. Their Commons voting participation while representing this constituency is 57.0 %, compared with a Commons average of 72.7 %. Browse all seats on the UK constituencies index.

Constituency snapshot

Current representation signals for this constituency.

Current MP Llinos Medi
Photograph of Llinos Medi MP ID 5085
Current party
PC Plaid Cymru
MP since 4 Jul 2024
Current Commons representation
Voting participation 57.0 %
328 of 575 eligible divisions
Region Wales
Electoral region of England, Scotland, Wales or Northern Ireland
Parliament ID 4527
Imported constituency identifier
Recent votes shown 10
Latest divisions listed below

Boundary

Imported constituency boundary for Ynys Môn.

Map

MP voting summary

How Llinos Medi has voted since becoming MP for this constituency.

Voted in 328 of 575 eligible divisions (57.0 %).

57.0 %

Participation

203

Aye

125

No

0

Against party

Aye / No split Ayes 203 / Noes 125

Recent divisions

Division Vote
Draft Code of Practice on Electronic and Workplace Ballots for Statutory Trade Union Ballots
Trade Work / Employment
Aye
Draft Trade Unions (Permissible Means of Voting) and Employment Rights (Unfair Dismissal) (Amendment) Order 2026
Trade Work / Employment
Aye
Public Office (Accountability) Bill Report Stage: Amendment 19 No
Public Office (Accountability) Bill Report Stage: Amendment 199 No
Public Office (Accountability) Bill Report Stage: Amendment 3 Aye
Immigration and Asylum Bill: Second Reading
Migration
No
Immigration and Asylum Bill: Reasoned Amendment to Second Reading
Migration
No
Draft Supply of Machinery (Safety) (Amendment etc.) and the EU Machinery Regulation (Enforcement etc. in Northern Ireland) Regulations 2026 Aye
Opposition Day: Early release of prisoners
Crime / Justice
Aye
National Security (State Threats) Bill: motion to agree to Lords Amendment 1
Defence
Aye
View full voting record →

Representation history

Every MP who has represented this seat, with how each voted during their time in office.

Photograph of Llinos Medi
Llinos Medi Current MP
PC MP since Jul 2024

57 %

Participation

203

Aye

125

No

0

Against party

Voted in 328 of 575 divisions while representing this seat. View full record →

Election results

How this seat has voted at general elections and by-elections. All UK election results →

Ultra-marginal — won by 2% in 2024

Majority of 637 votes · #46 most marginal of 650 seats.

4 July 2024

61 % turnout · maj 637
Llinos Medi · Plaid Cymru 10,590 (32.5%)
Virginia Crosbie · Conservative 9,953 (30.5%)
Ieuan Williams · Labour 7,619 (23.4%)
Emmett Jenner · Reform UK 3,223 (9.9%)
Martin Schwaller · Green Party 604 (1.9%)
Leena Farhat · Liberal Democrat 439 (1.4%)
Sir Grumpus L Shorticus · Official Monster Raving Loony Party 156 (0.5%)
Sam Wood · Libertarian Party 44 (0.1%)

More seats in Wales

Other UK parliamentary constituencies in Wales — explore their MPs and voting records.

Aberafan Maesteg Stephen Kinnock · Lab Alyn and Deeside Sir Mark Tami · Lab Bangor Aberconwy Claire Hughes · Lab Blaenau Gwent and Rhymney Nick Smith · Lab Brecon, Radnor and Cwm Tawe David Chadwick · LD Bridgend Chris Elmore · Lab Caerfyrddin Ann Davies · PC Caerphilly Chris Evans · Lab Cardiff East Jo Stevens · Lab Cardiff North Anna McMorrin · Lab Cardiff South and Penarth Stephen Doughty · Lab Cardiff West Mr Alex Barros-Curtis · Lab

Browse all UK constituencies →

Constituency source UK Parliament Members API
Member source UK Parliament member record

FAQs

Who is the MP for Ynys Môn?

Llinos Medi is the current MP for Ynys Môn. Source

Which party currently holds Ynys Môn?

Ynys Môn is currently represented by Llinos Medi of Plaid Cymru. Source

What is the Parliament constituency ID for Ynys Môn?

Ynys Môn's imported Parliament constituency ID is 4527. Source

Where can I find the member profile for Ynys Môn?

The current MP profile for Ynys Môn is linked from this page and records party, roles, interests, election data, and voting record where available. Source

Can the MP for Ynys Môn change?

Yes. Constituency representation can change after a general election, by-election, resignation, recall petition, or other parliamentary change. Re-running the current MP import refreshes this data. Source

Where does Ynys Môn data come from?

Constituency and current MP data is imported from the UK Parliament Members API. Source