the most popular leader. But the survey found that support for the Union remains on a knife edge, with 51% backing the UK compared to 49% in favour of independence, once don't knows are excluded.
Unlike other polls which ask for voting intention, Ashcroft asked voters to rate how likely they are to use their vote for each of the parties, on a scale of 0-100.
In the constituency vote the SNP won over 49 per cent of those who rated the likelihood of voting for at least one party at more than 50 out of 100.
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