Political Scientists predict huge SNP gains in 2015

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Newsnight ran a good piece yesterday explaining some of the problems with forecasting the next general election, including a very interesting contribution from Chris Hanretty from the UEA. You can find his excellent forecasting site here.

One of the best features of Chris’s model is that it produces precise probabilities for each party to win each seat, which we can compare to Ladbrokes’ constituency odds. I haven’t been through every seat, although I have had a good look at the Scottish ones already, because his forecasts produce some startling results there. If you like his approach, then there are some fantastic bets to be had, all on the SNP. Here are just a few seats I picked out with the Ladbrokes’ SNP odds and those suggested by the model.

Constituency Ladbrokes Hanretty
Gordon 4/7 1/100
Falkirk 5/6 1/50
Argyll and Bute Evens 1/10
Caithness, Sutherland and Easter Ross 2/1 1/16
Fife North East 9/4 2/5
Glasgow East 5/2 4/11
Ross, Skye and Lochaber 3/1 1/4
Glasgow Central 4/1 8/13
Paisley and Renfrewshire South 5/1 2/1
Orkney and Shetland 10/1 11/8

Before piling in to the prices, it’s worth having a good look at the FAQs on Chris’s site. They are completely open that the local performance of the Liberal Democrats is a major source of uncertainty, and I think that has caused a lot of the differences above. For example, in 2010 the SNP finished 51% behind the Lib Dems in Orkney & Shetland. I don’t think many people would be in a hurry to take 11/8 about them turning that around. As they point out on the site: “We are not gambling on the basis of these predictions”.

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Matthew Shaddick

Matthew Shaddick has been Head of Poliical Betting at Ladbrokes since 2008. He's a writer and odds-maker with particular expertise in UK and US elections. Also known to dabble in music, literary and other out of the way betting markets. Sometimes issues tips on horse racing and football, which are best ignored.