Welsh Westminster Polls

On this page are the latest Welsh Westminster polls for the 2029 general election together with a uniform swing calculation of the polling average. The seat and majority calculations are lifted directly from the 2029 General Election Swingometer for Wales.

Note: General Elections are scheduled to be held a maximum of 5 years from the first meeting of parliament plus 25 working days in accordance with the Dissolution and Calling of Parliament Act 2022. We will refer to the election as if it were to be held in 2029 unless it becomes clear that an early general election will happen.

Here is the polling average of the polls below together with the seat changes on a uniform swing. Information on how the polling average is calculated is available here.

		Votes			Seats		Seat Changes
Party		Then	Now	Change	Then	Now	Gains	Losses	Net
	Labour	36.97%	33.00%	-3.97%	27	25	0	-2	-2
	Reform UK	16.91%	21.00%	+4.09%	0	1	+1	0	+1
	Conservative	18.19%	18.00%	-0.19%	0	1	+1	0	+1
	Plaid Cymru	14.77%	13.00%	-1.77%	4	4	0	0	0
	Liberal Democrat	6.51%	9.00%	+2.49%	1	1	0	0	0
	Green	4.67%	5.00%	+0.33%	0	0	0	0	0

Seat Gains and Losses

See which seats have changed hands using our seat calculator.

Map Options

At the bottom of this page are the most recent Welsh Westminster polls for the 2029 general election ordered from newest to oldest. These polls should be used in conjunction with the Welsh Westminster swingometer. Pollsters ask the participants how they would vote if there were a general election tomorrow, or words to that effect.