Question Author
"I think Boris has done a pretty good job in the most difficult circumstances - and that's why his party should remain loyal to him. "
That, though, is purely voting out of loyalty, which is fine as far as it goes, but what I'm saying is: if you have other reasons to do with the here and now, and the future, then loyalty on it's own is not sufficient.
If you don't then fair enough. If all you are thinking of is your own seat,then I agree that that is selfish, although I suspect that for most MPs it is more than just that. And in any case, if enough seats are thought to be vulnerable then that is bad for the partry as a whole.