Latest Senedd polls

The Senedd, formerly the National Assembly for Wales, is the devolved legislature of Wales. At the 7 May 2026 election it grew from 60 to 96 Members of the Senedd (MSs), elected by closed-list proportional representation: 16 constituencies each returning six members by the D'Hondt method.

The headline figures average the last five polls fielded since the 7 May 2026 election, or every post-election poll while fewer than five have been published. The trend chart uses a trailing 5-poll moving average, calculated separately either side of the election so post-election polls are never averaged with pre-election ones.

Senedd polls ask how people would vote in a Welsh Parliament election, which can differ from how they would vote in a UK general election. Under the Senedd's proportional system seats follow vote share closely, so the same poll produces a very different seat picture from Westminster's first-past-the-post.

The 2026 election was the first under the 96-seat closed-list system, replacing the 60-member Additional Member System used from 1999 to 2021. Seat totals are therefore not comparable with earlier Senedd elections, and polls from before 2024 were asked about a different system.

Less often than Westminster polls. Polling was frequent in the run-up to the 7 May 2026 election and has been sparse since. The next Senedd election is due in May 2030.

Every published Senedd voting intention poll, including YouGov, Survation, More in Common, Find Out Now, Redfield and Wilton, Opinium and Beaufort Research.