Lessons from history
I like this analysis by Tom Calver of The Times. My key takeaway is from the final tweet is how accurate the polls are two weeks before the election.
The other key takeaway is the polls always narrow once the election is called which is something punters and everybody else should remember lest it lead to panic/pessimism/false optimism depending on your view point.
Betting on a hung parliament now appears to be a courageous decision in the Yes, Prime Minister sense.
TSE