Maybe someone could remind them of the reasons why the by-elections were called.
The last seat the Tories retained was I recall James Brokenshire's. He was a well regarded MP whose death was premature.
One lesson that Johnson and his Cabinet need to learn is that the public do not like being played for fools.
I would like to see a bit more analysis of the Tiverton and Honiton by election. At first glance it would suggest that the win wasn't due to Tories staying at home, but actively voting for the LibDems.
Realistically though, those with 24,000 majorities are probably safe, but those with less than 10,000 should worry.