Oh, I don't know - I'd settle for someone to shag, personally!No. Corbyn was a toxic arsehole. I didn't rejoin the party till he was replaced by someone sensible and dull.
As for charm and charisma, these are hallmarks of nice charming people. And also psychopaths. It can be hard to guess which they are initially. But you can (and should) judge them by their subsequent deeds. Johnson's deeds are well-documented.
For me, passion isn't what I'm going to use as my arbiter. I require someone to lead, not to shag.