Senedd Elections Guide by Prof Laura McAllister 2026

Key Points

• Wales faces its most important election in 25 years of devolved politics, set for 8 May 2026, with unprecedented national and international interest, including fully booked off-peak trains from Paddington to Cardiff Bay.
• Public knowledge of Senedd changes and the new Closed List Proportional Representation (PR) voting system remains low, with a YouGov/Cardiff University poll showing 58% unaware of the switch and only 7% correctly identifying it; 46% rely on UK news for political information, versus one in ten using Wales-produced sources.
• Terminology clarification: Elections are to the Senedd (Welsh Parliament), not the outdated ‘Welsh Assembly’; Wales is a nation, not a ‘principality’; ‘England and Wales’ applies to reserved matters like criminal justice and policing.
• Senedd reforms include a four-year term (next election 2030), expansion to 96 Members of the Senedd (MSs) despite unpopularity, Closed List PR where voters select parties only (no candidate choice), and voting eligibility for those aged 16+ who are British, Irish, EU citizens, or other nationals with leave to remain.
• Tactical voting persists under Closed List PR due to no minimum threshold but a de facto 12-14% needed; election is competitive, potentially ending Labour’s dominance since 1999.
• Turnout was 47% in 2021 (a record but still low); factors like cost of living, public services, and insurgent parties could boost it, as seen in the Caerffili by-election.
• New mega-constituencies (e.g., Gwynedd and Maldwyn, Brycheiniog Tawe Nedd) challenge campaigning, possibly shifting focus online; manifestos are launching early, with coalition potential baked into the system.
• Polls provide mood snapshots but come with caveats; politicians stress only polling day votes count.

Cardiff (Cardiff Daily) March 27 2026 – Professor Laura McAllister of Cardiff University’s Wales Governance Centre has provided an essential guide to the upcoming Senedd elections, describing them as “unquestionably fascinating” and the most significant in a quarter century of devolved politics. Originally published in the Western Mail on Saturday, 21 March 2026, her analysis highlights low public awareness amid sweeping reforms, intense competition, and global interest, with off-peak trains from Paddington to Cardiff Bay fully booked as journalists flock to cover the contest for Wales’ national parliament. She aims to correct misunderstandings and inform voters ahead of 8 May polling day.

What Makes This Election Historic?

As reported by Professor Laura McAllister of the Western Mail,

“We’re now a matter of weeks away from an unquestionably fascinating election in Wales, arguably the most important in a quarter century of devolved politics.”

She notes that traditionally, UK political journalists would consult Google Maps for Cardiff Bay, but demand has surged, with international media also seeking expertise on Welsh politics’ distinctiveness. Professor McAllister expresses mild frustration at repeating basics to UK journalists who should know “all of the UK,” yet embraces a public service role.

A YouGov/Cardiff University poll underscores the challenge: 58% of respondents did not know about the switch to Closed List PR, with only 7% identifying it correctly, while 46%—nearly half—rely primarily on UK news, and just one in ten use Wales-produced sources. As Professor McAllister states,

“These things are unquestionably connected,”

setting an unfavourable foundation for the biggest elections since 1999. Her explainer seeks to bridge this gap as campaigns unfold and results emerge on 8 May.​

Why Is Terminology So Important?

Professor Laura McAllister of the Western Mail clarifies essential terms to avoid embarrassment. First, these are elections to the Senedd (or Welsh Parliament), not the ‘Welsh Assembly’—likening the error to calling football ‘soccer’ or rugby ‘rugger.’ The institution was originally the National Assembly for Wales, never ‘Welsh Assembly,’ and rebranded Senedd Cymru/Welsh Parliament in 2020 to reflect its law-making status.

Second, “Wales is NOT a ‘principality’, and it never was according to the definition of a land governed by a prince,” she asserts, calling it a “historical and ideological myth” pushed by the uninformed or those with agendas. Wales qualifies as a nation by international measures, legitimising ‘national’ in Welsh politics; alternatives like ‘at Wales’ or ‘at UK’ level avoid confusion.

Third, while ‘England and Wales’ is valid for reserved areas like criminal justice, policing, welfare, and rail—due to 1999 devolution’s asymmetry—voters must watch for misapplications during campaigns, as parties’ powers depend on devolved boundaries.​

What Are the Key Senedd Reforms?

Reforms dominate discourse, per Professor McAllister’s Western Mail piece. The Senedd term shrinks to four years, with the next poll in 2030; membership expands to 96 MSs, unpopular globally amid disdain for politicians but necessary for scrutiny, she argues. Northern Ireland has 90 MLAs, Scotland 129 MSPs—Wales needs parity to escape being “under-powered and thus, hamstrung.”

Start-up and ongoing costs are “around 0.07% of the Senedd’s total budget,” far outweighed by scrutiny’s taxpayer value. Professor McAllister, who has “consistently argued that this change is absolutely necessary,” predicts long-term benefits if new MSs—potentially a majority—upskill in challenge.

Voting shifts to a single ballot listing six-plus parties and independents, with closed lists under party names; voters cross a party, not candidates, raising

“serious voter choice and accountability issues,”

she warns. Seat allocation uses D’Hondt, varying by list position and votes won regionally.​

Who Can Vote and How Does the New System Work?

Eligibility broadens: all aged 16+ who are British or Irish citizens, other EU citizens, or nationals with (or exempt from) entry/stay permission. Professor McAllister debunks myths: Closed List PR does not eliminate tactical voting, especially in polarised Wales; no seat guarantee exists, depending on rivals’ performance in 16 mega-constituencies (six MSs each).

A de facto 12-14% threshold applies sans formal minimum, so low-polling parties may prompt tactical shifts; anti-incumbent votes require weighing governing viability. Smaller parties might ally via D’Hondt, reducing but not erasing tactics versus Westminster polls.​

Is Labour’s Dominance Ending?

Excitement stems from genuine competition, rare in Labour’s century-plus grip: 28 straight Westminster wins, Senedd control since 1999, often with outright majorities. Polling suggests change, a “historic and groundbreaking moment” forcing “new, untested, and ambitious leadership” via coalitions.​

What Role Will Turnout Play?

At 47% in 2021—the highest ever—turnout still saw over half abstain. Professor McAllister notes stakes drive participation: cost-of-living crisis, strained services, insurgent parties mirror Caerffili by-election surges under UK media glare. Age-based differentials could tip seats.​

How Will Parties Campaign in Mega-Constituencies?

Sprawling areas like Gwynedd and Maldwyn (Irish Sea to English border) or “immense” Brycheiniog Tawe Nedd challenge focus; PR caps sweeps, prompting online pivots? Engagement may suffer, altering election “feel.”​

Do Manifestos and Polls Matter to Voters?

Early manifestos detail pledges, costings, red lines for deals—yet most vote emotionally, questioning viability’s weight. Coalitions loom, so watchers parse cooperation signals.

Polls are “snap shots” with errors, sampling issues, biases—but trends matter, as in Caerffili or England’s Gorton and Denton. Politicians’ “only vote that counts is the one on polling day” mantra holds, yet polls backdrop the mood.​

Professor McAllister’s comprehensive guide, drawn from her Western Mail article, equips voters for this pivotal contest, urging scrutiny of reforms’ promise amid entrenched myths and low awareness. As campaigns intensify, her call for informed engagement resonates across Wales.