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Nigel Marriott's Blog

An independent statistician using data to understand our world and to predict the future

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UK Local Elections #2C – 2025 West England Mayoral Election – Review of My Forecast

May 6, 2025 By Nigel

Labour have retained the West of England Combined Authority (WECA) Mayoralty  As I predicted, the contest was won with less than a quarter of the vote and with a small majority (less than 3%).  Unfortunately, I had the Greens winning the mayoralty so on the face of it, this is a forecasting error for me.  However, when voters are as fragmented as they are today, measuring forecasting skill is not as straightforward as it might seem.

 

[Read more…] about UK Local Elections #2C – 2025 West England Mayoral Election – Review of My Forecast

Filed Under: Elections, Forecasting, Polling Tagged With: B&NES, Bath, Bristol, Conservative, Election forecasting, FPTP, Greens, Labour, Lib Dems, local election, Majority, Metro Mayor, South Gloucs, Supplementary Vote, WECA, West England

UK Local Elections #2B – 2025 West England Mayoral Election – My Final Forecast

April 27, 2025 By Nigel

The West England Combined Authority (WECA) Metro Mayor election of 2025 will probably be won with less than a quarter of all votes cast.  My analysis shows it is a 5-way marginal, the likes of which have never been seen before in England.  All five parties have reasons to be optimistic but as of now, I and most other forecasters make the Greens favourites to win the 2025 WECA mayoralty.  With an election this tight, the parties get-out-the-vote efforts will play a big part in the final outcome.

All forecasts, charts & tables are based on the latest polls as of 26th April 2025.

[Read more…] about UK Local Elections #2B – 2025 West England Mayoral Election – My Final Forecast

Filed Under: Elections, Forecasting, Polling Tagged With: B&NES, Bath, Bristol, Conservative, FPTP, Greens, Labour, Lib Dems, local election, Majority, Metro Mayor, South Gloucs, Supplementary Vote, WECA, West England

UK Local Elections #2A – 2025 West England Mayoral Election – My Initial Forecast

April 13, 2025 By Nigel

The West England Combined Authority (WECA) Metro Mayor election of 2025 will probably be won with less than a quarter of all votes cast.  My analysis shows it is a 5-way marginal, the likes of which have never been seen in England before.  Why no-one has polled WECA is a mystery because this is shaping up to be one of the most unpredictable elections I’ve ever seen.

My forecast puts the Greens first with 24% but it also puts Reform, Lib Dems & Labour just behind with each on 20% and the Conservative and Independent candidates bringing up the rear.  I am using a weighted average of four models of which 2 have Labour winning, 1 has the Greens winning and the 4th model (with the highest weight) has Reform winning.  That’s how unpredictable the election is and why we need a WECA specific opinion poll!

This article is based on polls as of 7th April 2025.  My updated forecast based on polls as of 26th April can be found here.

[Read more…] about UK Local Elections #2A – 2025 West England Mayoral Election – My Initial Forecast

Filed Under: Elections, Forecasting, Polling Tagged With: B&NES, Bath, Bristol, Conservative, FPTP, Greens, Labour, Lib Dems, local election, Majority, Metro Mayor, South Gloucs, Supplementary Vote, WECA, West England

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