The Brexit Defeat.  Statement on the causes.
Labour’s Vote Held Up in the 2019 Defeat.  How the vote in England was the biggest since Blair’s 1997 victory.  The problem was a very high Tory vote, when they promised Brexit.
Exact figures for each lost seat.
Labour’s Lost Seats – Causes.   In several of them, Labour got more votes in 2019 than 2015.  We lost because Leave voters mostly voted Tory.  Showing the number of English votes in each election from 1982.