Question Author
mikey; //In June of last year, 12,878,460 voted Labour. //
Yes, but the majority are 'core default Labour voters', who vote labour without thinking through the issues, what has changed is how Labour, or I should say Momentum, has been successful in recruiting large numbers of the young and gullible who were taken in by lies and promises, such as the abolition of Education fees, and promises to the re-nationalising of the railways, scrapping the UK's nuclear defences, and the demonising of Israel by supporting terrorist organisations, etc.
I suggest a very large proportion of Labour voters both young and old are politically naive.