It wasn’t asking for a mandate for Brexit, the vote was already for Brexit at the referendum.If Corbyn had won the GE he would still have been negotiating Brexit.
Voters didn’t like the Conservative Manifesto ( why would they) and the election was run badly by Team May, but they still won and why? Because nobody saw Corbyn as PM material.
Pigeon Lofts - any words of warning? Thank you
So many voters ( Labour voters) either didn’t vote or voted holding their noses because they didn’t want him as PM.

