2019 and 2017 vote split

A quick scout around the statistics from the current election and the preceding one shows a few interesting things:

• Conservatives achieved an increase in vote of a little over 1%. Labour dropped about 8%.
• For Conservatives to get a seat, they needed around 38,000 votes.
• Labour need around 50,000.
• Last time it was Conservatives 43,000 votes per seat and Labour 49,000 votes per seat.
• It illustrates the leverage of the last 329,000 votes to gain an extra 66 seats for the Tories. That works out to around 5000 votes per seat tipped.

No doubt the strategists had done these type of calculations ahead of the election.