Hypothesis: General Election 2017 was a structural break in polled support for Remain/Leave
Via @britainelects
Between 2015 & 17, pollsters weighted polls to vote share of GE15 - a majority for Con+UKIP
Since GE17 there is a majority in vote share terms for LAB+LIB+GREEN+SNP+PC
But pollsters say weighting doesn’t work like that now
21 for Leave
19 for Remain
3 Tie.