2013 Ynys Môn by-election

{{Infobox election

| election_name = 2013 Ynys Môn by-election

| type = parliamentary

| country = Wales

| seats_for_election = The Ynys Môn seat in the Welsh Assembly.
Triggered by vacation of seat by incumbent

| ongoing = no

| previous_election = 2011 National Assembly for Wales election

| previous_year = 2011

| next_election = 2016 National Assembly for Wales election

| next_year = 2016

| election_date = 1 August 2013

| candidate1 = Rhun ap Iorwerth

| image1 = 150x150px

| party1 = Plaid Cymru

| popular_vote1 = 12,601

| percentage1 = 58.2%

| swing1 = {{increase}}16.8%

| candidate2 = Tal Michael

| image2 = File:No image wide.svg

| party2 = Welsh Labour

| popular_vote2 =3,435

| percentage2 = 15.9%

| swing2 = {{decrease}}10.3%

| candidate4 =Nathan Gill

| image4 = 150x150px

| party4 = UK Independence Party

| popular_vote4 =3,099

| percentage4 = 14.3%

| swing4 = New party

| candidate5 = Neil Fairlamb

| image5 = File:No image wide.svg

| party5 = Welsh Conservative Party

| popular_vote5 = 1,843

| percentage5 = 8.5%

| swing5 = {{decrease}}20.7%

| map_image = Ynys Môn (Assembly constituency).svg

| map_size =

| map_caption = Map showing the Ynys Môn Assembly constituency within the North Wales electoral region within Wales.

| title = AM

| posttitle = Subsequent AM

| before_election = Ieuan Wyn Jones

| before_party = Plaid Cymru

| after_election = Rhun ap Iorwerth

| after_party = Plaid Cymru

}}

A by-election for the Welsh Assembly constituency of Ynys Môn was held on 1 August 2013,{{cite news|url=https://www.bbc.com/news/uk-wales-politics-23072242|title=Ynys Mon by-election set for 1 August|date=26 June 2013|via=www.bbc.co.uk}} The by-election was triggered following the resignation on 20 June 2013 of its sitting Assembly Member, Ieuan Wyn Jones.{{Cite web|url=https://senedd.wales/|title=Senedd Cymru | Welsh Parliament|website=senedd.wales}}

The election was the third Assembly by-election to be held since its formation in 1999, and the first for over seven years (the previous contest being at Blaenau Gwent in June 2006).

Prior to the by-election, the governing Labour Party held exactly half the Assembly seats, meaning a gain for that party (who have held the equivalent seat in the House of Commons since 2001) would have given the Welsh government a two-seat majority.

Election

Six candidates were nominated for the election.{{cite news |url=https://www.bbc.co.uk/news/uk-wales-23182533 |title=Ynys Mon by-election: Six names put forward for poll |publisher=BBC News online |date=5 July 2013}}{{Cite web |url=http://www.ynysmon.gov.uk/Journals/2013/07/08/v/d/u/Datganiad_am_personau_a_enebwyd.pdf |title=Datganiad am y Personau a Enwebwyd a Rhybudd y Bleidlais / Statement of Persons Nominated and Notice of Poll |access-date=2013-07-17 |archive-date=2016-03-03 |publisher=ynesmon.gov.uk |archive-url=https://web.archive.org/web/20160303224502/http://www.ynysmon.gov.uk/Journals/2013/07/08/v/d/u/Datganiad_am_personau_a_enebwyd.pdf |url-status=dead }}{{cite news |url=https://www.bbc.co.uk/news/uk-wales-north-west-wales-23545120 |title=Plaid's Anglesey win 'energising' for party, says Rhun ap Iorwerth |publisher=BBC News online |date=2 August 2013}}

Result

Plaid Cymru held the seat with a greatly increased majority.

{{Election box begin|title=2013 Ynys Môn by-election

}}

{{Election box winning candidate with party link

|candidate = Rhun ap Iorwerth

|votes= 12,601

|percentage= 58.24

|change= +16.8

|party=Plaid Cymru

}}

{{Election box candidate with party link

|candidate = Tal Michael

|votes= 3,435

|percentage= 15.88

|change= -10.3

|party= Welsh Labour

}}

{{Election box candidate with party link

|candidate = Nathan Gill

|votes = 3,099

|percentage = 14.32

|change = New

|party = UK Independence Party

}}

{{Election box candidate with party link

|candidate = Neil Fairlamb

|votes = 1,843

|change = -20.7

|percentage = 8.52

|party = Welsh Conservatives

}}

{{Election box candidate with party link

|candidate = Kathrine Jones

|votes = 348

|percentage = 1.61

|change = New

|party = Socialist Labour Party (UK)

}}

{{Election box candidate with party link

|candidate = Stephen Churchman

|votes = 309

|change = -1.8

|percentage = 1.43

|party = Welsh Liberal Democrats

}}

{{Election box majority

|change= +30.1

|percentage= 42.34

|votes= 9,166

}}

{{Election box turnout

|change = -6.2

|percentage = 42.4

|votes = 21,635

}}

{{Election box hold with party link|

|winner = Plaid Cymru

|swing = +13.58

}}

Previous result

{{Election box begin |

|title=2011 Welsh Assembly election: Ynys Môn{{cite web|url=https://www.bbc.co.uk/news/special/election2011/constituency/html/26704.stm |title=Wales elections |date=6 May 2011 |work=BBC News |publisher=BBC |accessdate=6 May 2011}}

}}

{{Election box winning candidate with party link|

|party = Plaid Cymru

|candidate = Ieuan Wyn Jones

|votes = 9,969

|percentage = 41.4

|change = +1.7

}}

{{Election box candidate with party link|

|party = Welsh Conservatives

|candidate = Paul Williams

|votes = 7,032