Pollsters agree that Labour is out in front in the fight for Norwich South.

Former Norwich School student, turned pollster Lord Ashcroft, who conducted a poll last June, and University of East Anglia expert Chris Hanretty, who has set up a model also taking into account history and demo-graphic, both put Labour on 33pc.

Both agree the Greens will come second, but Dr Hanretty thinks the Conservatives will join the Greens in second place on 21pc. The Liberal Democrats come fourth place in both scenarios, with Dr Hanretty predicting a more generous 15pc of the vote share to Lord Ashcroft's 12pc for the incumbent.