Are you in the UK - there was a lot of coverage about "Article 50" at the time it was invoked.
I personally feel that side won by promising many conflicting visions to different groups and not being able to deliver when they won the vote.
"“In a 52-48 referendum this would be unfinished business by a long way."
Of course he was thinking of a 52-48 vote for Remain - but his point is still valid.
Brexit also a factor in '19, of course, but those seats are red in history and not any more in demographics.