Who is the MP for Dwyfor Meirionnydd?

Liz Saville Roberts (Plaid Cymru) is the MP for Dwyfor Meirionnydd. They were first elected in May 2015.

Who won Dwyfor Meirionnydd at the 2024 general election?

The 2024 general election in Dwyfor Meirionnydd was won by Plaid Cymru with 53.9% of the vote, ahead of Labour on 14.6%.

Who is projected to win the next election in Dwyfor Meirionnydd?

PollCheck's current projection has Plaid Cymru on 59.0% and Reform UK on 18.4% if a general election were held today. The projection updates as new polling is added.

What council is Dwyfor Meirionnydd in?

Dwyfor Meirionnydd crosses multiple council boundaries: Gwynedd (95%), Denbighshire (5%). Westminster constituencies and local councils are separate units.

What is the demographic profile of Dwyfor Meirionnydd?

Dwyfor Meirionnydd is in Wales. The seat is closely divided on Brexit (Leave vote estimated at 47.4% in 2016). Around 33.9% of residents have a degree, a median age of 48, and 68.2% of homes are owner-occupied (Census 2021).

When was the last general election in Dwyfor Meirionnydd?

The most recent general election was held on 4 July 2024. In Dwyfor Meirionnydd, Plaid Cymru won with 53.9% of the vote. The next general election must be held by August 2029.

Which parties have won Dwyfor Meirionnydd in recent elections?

Recent general election winners in Dwyfor Meirionnydd: 2010 Plaid Cymru, 2015 Plaid Cymru, 2017 Plaid Cymru, 2019 Plaid Cymru, 2024 Plaid Cymru.

Dwyfor Meirionnydd MP Liz Saville Roberts (Plaid Cymru): GE2024 result, current poll projection

Who lives in Dwyfor Meirionnydd? Constituency demographics

From the 2021 Census and 2016 EU referendum estimates. Constituency-level data on 2024 boundaries.

Leave vote 2016

47.4%

UK average ~52%

Degree or above

33.9%

UK average ~34%

No qualifications

17.5%

UK average ~18%

Owner-occupied

68.2%

UK average ~63%

Renting (social + private)

31.2%

UK average ~36%

Median age

48.4

UK median ~40

Age 65+

30.5%

UK average ~19%

Age 18-34

23.9%

UK average ~28%

How did Dwyfor Meirionnydd vote in 2024 and how would it vote now?

2024 vote shares from the HoC Library. Current projection is at the 7-poll average.

2024 general election

PC hold · majority 15,876 votes (39.3pp) · turnout 55.3%

Current projection

If a general election were held today, at current poll average

Map of Dwyfor Meirionnydd

Switch between ward-level 2024 election winners and a demographic view. Ward winners are Britain Elects' / New Statesman modelled estimates with an average ~4pp margin of error per ward. The demographic view splits the seat into small neighbourhoods (around 1,500 residents each, from the 2021 Census). Hover any area for detail.

Senedd 2026 layer

How Dwyfor Meirionnydd voted at the Senedd election (7 May 2026)

Dwyfor Meirionnydd sits entirely within the Senedd constituency of Gwynedd Maldwyn. Senedd elections use a closed-list proportional system; each Senedd seat returns six members.

Senedd constituency	Share of Dwyfor Meirionnydd	Winner	Runner-up	Seats (6 per constituency)
Gwynedd Maldwyn	100%	Plaid Cymru 44.2%	Reform UK 27.7%	4 Plaid Cymru, 2 Reform UK

Senedd 2026 results from official declarations. Overlap percentages are area-based using the post-2024 Westminster boundary against the new 16-seat Senedd boundary.

Council layer (not Westminster)

Dwyfor Meirionnydd within Gwynedd and Denbighshire

Dwyfor Meirionnydd crosses multiple council boundaries: Gwynedd (95%), Denbighshire (5%). The figures below come from the council elections held on Thursday 7 May 2026 in each constituent council.

Council overlap

Council	Share of seat
Gwynedd 55 LSOAs	95%
Denbighshire 3 LSOAs	5%

Most recent council ward results

Latest council winner per ward. Where May 2026 elections happened, those are shown; otherwise the most recent year on the ward’s pre-2026 boundary (via DCLEAPIL, 2014-2024). The "Shift since GE2024" column is only computed for May 2026 results - earlier council votes pre-date the GE, so no directional shift is shown.

Loading ward results...

Ward	GE2024 winner	Latest council winner	Shift since GE2024	Turnout

Projection trajectory

PollCheck's projection for Dwyfor Meirionnydd at each of the last 60 GB polls. Hover the chart for the underlying poll details.

Who has won Dwyfor Meirionnydd at past general elections?

2024 result is on current boundaries. The 2019 row is the UK Parliament's notional recalculation onto the 2024 boundaries (directly comparable to 2024). The 2010, 2015 and 2017 rows are on the boundaries in force at the time and aren't directly comparable.

Year	Result	MP	Lab	Con	LD	Right (Ref/UKIP)	Green	Other	Majority	Turnout
2010	PC hold	Elfyn Llwyd	13.9%	22.3%	12.2%	2.7% UKIP	-	4.5%	6,367	63.7%
2015	PC hold	Liz Saville-Roberts	13.5%	22.7%	4.0%	10.8% UKIP	3.4%	4.8%	5,261	65.1%
2017	PC hold	Liz Saville Roberts	20.7%	29.1%	3.1%	2.0% UKIP	-	-	4,850	67.9%
2019notional	Plaid Cymru winner	Liz Saville Roberts 2019 MP, pre-review boundary	22.8%	26.2%	0.2%	-	-	50.8%	9,880	69.6%
2024	PC hold	Liz Saville Roberts	14.6%	11.7%	3.4%	12.0% Ref	3.6%	0.7%	15,876	55.3%

Earlier years are on pre-2024 boundaries; comparable results on the new boundary will be added when sourced.

Constituencies most like Dwyfor Meirionnydd

Five seats with similar demographic profiles to Dwyfor Meirionnydd. Politics shown for context.

What would change this seat?

Move the sliders to set national vote shares. The per-seat projection updates live. Reset returns to the current 7-poll average.

Sources

2024 general election results · UK Parliament Election Results portal and House of Commons Library briefing CBP-10009.
Notional 2019 results on 2024 boundaries · UK Parliament Election Results portal. Recalculated by Parliament; carries assumptions about how 2019 voters would have distributed across the redrawn boundaries.
Historic general election results (2010-2017) · House of Commons Library historic results files (on the boundaries in force at the time).
Ward-level GE2024 estimates · Britain Elects / New Statesman - article by Ben Walker, underlying spreadsheet. Modelled from constituency totals; average ~4pp per-ward MoE.
May 2026 council ward results · Democracy Club via PollCheck's locals 2026 dataset.
Earlier council ward results (2014-2024) · DCLEAPIL v1.0 (Jason Leman, drawing on Andrew Teale's LEAP dataset and Democracy Club).
Demographics · ONS Census 2021 (England and Wales), aggregated to constituency level using the ONS LSOA21 -> PCON24 best-fit lookup.
EU referendum 2016 estimates · Constituency-level Leave vote estimates (Hanretty 2017 method).
MP details and Cabinet roles · UK Parliament Members API. MP photos are fetched live from the same source.
Boundary geometry and lookups · ONS Open Geography Portal (PCON24 boundaries, LSOA21 boundaries, LSOA21-WD24-LAD24 best-fit lookup).
Current projection and trajectory · PollCheck's demographic swingometer applied to the rolling 7-poll average from aggregated GB polls. Not a true MRP - vote-share movements are applied through per-constituency sensitivity multipliers derived from demographic regressions.

If you spot a data issue, please let us know.

Dwyfor Meirionnydd

Liz Saville Roberts