When it's the first ref curated by a PM who will actually honour the result.
JC knows a GE is likely to come before brexit is sorted. He knows his PLP will push remain. He can head them off by sayin we'll offer a PV if we win a GE. 1/
Then Labour will have a chance to pitch THEIR deal. 1st to the public & if they win, to the EU. 2/
They intended to use PV to reverse brexit & damage JC, but this way it could elect JC & ensure Labour's compromise package gets passed. 3/
The problem is the chronology of events. Currently his deck is stacked against him. His impossible task it to get a hostile PLP to work for him.5/
It also would have the genius side effect of removing the ability of parliament to block it. 7/
Crucially, with no need for a parliamentary vote, Labour's deal would be automatically accepted if leave won ref2. 8/
But Abbott has said Labour will support PV on any deal even if a GE can't be triggered. Well the only way that would come to pass is if the new Tory leader accepts Labour's terms for a deal! 9/
But JC has to maneuver thru parliament. Public support for leave does nothing to change the equation he faces in the commons. 11/
We shouldnt have to have PV, it makes no sense but given the circumstances this is why I believe JC has changed tack. 19/