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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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Forecasting #3 – How Accurate are My Election Forecasts?

May 8, 2025 By Nigel

A good forecaster should always provide an easily accessible list of forecasts made, how the forecast was arrived at and how accurate it ended up being.  At long last, here is my election forecasting track record updated with the 2024 UK General Election so finally I am a good forecaster I hope!

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Filed Under: Elections, Forecasting Tagged With: Accuracy, elections, forecasting, Forecasting model, Seat forecast, Track Record

Forecasting#2 – Do Election Pollsters Show Forecasting Skill?

September 28, 2018 By Nigel

As I write this, a plethora of economic forecasts are making the rounds in the news in the UK.  In all cases, the forecasters have failed to publish their track record and these days, I will not pay attention to what they say unless their forecasts are accompanied by a track record.  But, how does one go about presenting a forecasting track record to prove that one has forecasting skill?  To demonstrate, I will analyse how well opinion polls have predicted General Elections in the UK and measure their track record.  I must confess I was surprised at what I found out and I would urge all opinion pollsters to take note of my results.

[Read more…] about Forecasting#2 – Do Election Pollsters Show Forecasting Skill?

Filed Under: Elections, Forecasting, Polling Tagged With: Election forecasting, Forecasts, Opinion Polls, Track Record

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