Interesting coming back and re-reading this after seeing what actually happened.
Two things that sunk the Tory majority:
1. The students voted.
2. Tactical voting may have had an impact in some seats.
And one thing that saved them from an even worse result:
3. The SNP stuffed up (IndyRef2)...
Saw an article on the Guardian recently that addressed this quite well. Yes, YouGov was set up by pro-Tory people, but the narrow gaps they are reporting are pretty easy to see are due to fairly transparent methodology reasons: they're predicting a higher than normal turn out from students, and...