Gwynedd Council elections

Bryncrug / Llanfihangel by-election 14 June 2012^[2]

Party		Candidate	Votes	%	±%
	Independent	Beth Lawton	212	42.4	N/A
	Plaid Cymru	Alun Wyn Evans	136	27.2	N/A
	Independent	John Pughe	66	13.2	N/A
	Independent	Nancy Elizabeth Clarke	51	10.2	N/A
	Llais Gwynedd	Jason Parry	35	7.0	N/A
	Independent	Maria Sarnacki	94	13.8	N/A
Majority			76	15.2
Turnout
	Independent hold		Swing

This election was scheduled to take place as part of the 2012 Gwynedd Council election but was delayed as no candidates were nominated for the seat vacated by retirement of Independent Councillor Arwel Pierce.^[3]

Cadnant by-election 2 April 2015^[4]

Party		Candidate	Votes	%	±%
	Labour	Glyn Thomas	233	34.2	6.1
	Plaid Cymru	Glyn Tomos	185	27.1	32.6
	Llais Gwynedd	Jason Parry	148	21.7	N/A
	Independent	Maria Sarnacki	94	13.8	N/A
	Conservative	David Hibbert	22	3.2	N/A
Majority			48	7.1
Turnout
	Labour gain from Plaid Cymru		Swing

Morfa Nefyn 9 July 2015^[5]

Party		Candidate	Votes	%	±%
	Plaid Cymru	Sian Wyn Hughes	315	71.9	5.5
	Llais Gwynedd	Winifred Jones-Lewis	123	28.1	5.5
Majority			192	43.8
Turnout
	Plaid Cymru hold		Swing

Llanaelhaearn by-election 19 November 2015^[6]

Party		Candidate	Votes	%	±%
	Plaid Cymru	Aled Wyn Jones	200	48.7	36.7
	Llais Gwynedd	Wynne Thomas Isaac	112	27.3	22.6
	Independent	Eric Cullen	99	24.1	N/A
Majority			88	21.4
Turnout
	Plaid Cymru gain from Llais Gwynedd		Swing

Dewi by-election 19 November 2015^[7]

Party		Candidate	Votes	%	±%
	Plaid Cymru	Gareth Roberts	189	59.4	2.1
	Labour	Eirian Roberts	110	34.6	0.2
	Liberal Democrats	Andrew Joyce	19	5.9	1.9
Majority			79	24.8
Turnout
	Plaid Cymru hold		Swing

Pwllheli South by-election 26 November 2015^[8]

Party		Candidate	Votes	%	±%
		Hefin Underwood	269	45.4	N/A
	Plaid Cymru	Alan Williams	168	28.4	11.9
	Independent	Micheal Parry	106	17.9	N/A
	Llais Gwynedd	Peta Merrian Pollitt	49	8.3	51.5
Majority			101	17.0
Turnout
	Independent gain from Llais Gwynedd		Swing

Marchog by-election 14 July 2016^[9]

Party		Candidate	Votes	%	±%
		Dylan Fernley	211	65.3	N/A
	Labour	Luke Tugwell	112	34.7	2.7
Majority			99	30.6
Turnout
	Independent hold		Swing

The Marchog by-election was triggered by the resignation of Councillor Chris O'Neal, an Independent, after he'd admitted assaulting a taxi-driver.^[10]

Y Felinheli by-election 14 July 2016^[11]

Party		Candidate	Votes	%	±%
	Plaid Cymru	Gareth Wyn Griffith	614	92.6	N/A
	Conservative	Andrew Kinsman	49	7.4	N/A
Majority			565	85.2
Turnout
	Plaid Cymru hold		Swing

The by-election was triggered by the resignation of Councillor Siân Gwenllian of Plaid Cymru after her election to the Welsh Assembly as Member for Arfon.

Waunfawr by-election 21 July 2016^[12]

Party		Candidate	Votes	%	±%
	Plaid Cymru	Edgar Wyn Owen	358	75.8	18.6
	Labour	Paul Thomas Scott	114	24.2	N/A
Majority			244	51.6
Turnout
	Plaid Cymru hold		Swing

The by-election was triggered by the resignation of Councillor Eurig Wyn of Plaid Cymru.

• List of electoral wards in Gwynedd