Individual opinion polls tend to be awarded a level of attention that is wholly disproportionate to their actual significance. At every election or referendum, there is usually one, seemingly stray poll that goes against the grain and sparks intense debate. And so it was this week when a lone poll appeared to suggest the beginning of a surge of support for Jeremy Corbyn’s Labour Party.
Coming after 18 straight double-digit leads for the Conservative Party, the poll by ICM put Labour only seven points behind Boris Johnson’s party, on 34% of the vote. It is the highest share of the vote for Labour that has been recorded by any pollster since early May. That it marks only a two-point increase in Labour’s vote share since ICM’s previous poll, and so is within the margin of error, has largely been ignored. That it suggests that Boris Johnson could fail in his quest to win an overall majority has garnered much more attention.
But why the surprise? The reality is that ever since the campaign began, public support for Jeremy Corbyn’s Labour Party has been on the rise.
In the days before MPs voted for the election to take place, Labour averaged just 23% of the vote. By the time that Parliament had been dissolved and the official campaign had begun this had already jumped to 28%. Today, Labour’s average is about to reach 31%.
Certainly, there are still some in-built disadvantages for Labour. For one thing, if this really is a ‘Brexit election’ then the Remain camp is still strongly divided. Labour is attracting less than half of the Remain vote while in only four months the percentage of Leavers who are backing the Conservatives has rocketed from 39 to 73%.
And then there are the parties’ 2017 electorates. While Corbyn and Labour are today only retaining about seven in ten people who voted for them two years ago, Boris Johnson and his party are today retaining 83% of their 2017 electorate.
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