Besides telling the PLP to wait until 2020 is pretty stupid, considering we were/are working under the assumption of a snap general election
Really? While the Tories would probably win, I don't see why they would want to risk it, considering how volatile British Politics are at the moment. The potential gain would be slim, already having a comfortable parliamentary majority and not needing to call a new election for almost four years. (I assume they could get rid of the Fixed Term Parliaments Act easily if they wished).
