What does the Survation poll suggest for Rochdale?

How Rochdale may vote in the parliamentary by-election, both according to the national polls (Britain Predicts) and Survation's own Muslim voters poll

G. Galloway candidacy not accounted for in model output
*Muslim fall factor estimates effect of Survation poll on the Labour vote in Rochdale, all else being equal
Source: Ben Walker, analysis of polls
New Statesman