In the beating sunshine deep in the heart of one of the Conservatives’ safest Midlands seats, Wes Streeting is slapping on factor 50 for another afternoon in pursuit of a historic Labour majority. It is in these safe seats where it will be seen whether the extinction-level predictions for the Tories are accurate.
But Streeting, who has been dispatched by Labour HQ to crisscross the country hundreds of miles, says his party is feeling the heat of undecided voters – and during a half hour of canvassing, there are plenty of them politely reluctant to commit to Labour.