You said you'd never vote for a party because of the leader, but you would vote against.
I might vote against (by "not voting for") a
party for the reasons given. I have otherwise voted
for candidates across the political spectrum because I liked
that candidate's approach to their party's nuanced viewpoint on the world.
The incumbant in the seat (given being otherwise favourable, and I've been 'lucky' enough to have had incumbants that are rebellious (in the right way) within the not-so-perfect party) gets a little extra credit, as a known factor compared with their various challengers who might say things but have no track record.
You cited UKIP as one of the parties this applies to.
UKIP has had nothing to offer me, as a party-whole, and it appears that no candidate has had anything they thought worth saying that gives them the 'right side of the UKIP spectrum' aspect to them.
You then mentioned something about the past holder of the UKIP leadership being an orator type,
It's how I tend to experience him, mostly. He toned down a bit by the time of the referendum, but he seemed to always be doing a "soapbox, unplugged" speech-pattern, out-shouting the others, throughout the decade before that. Someone needed to tell him when he had a microphone active, and get him to stop trying to out-project the 'regular' politicians on Question Time, or whatever.
My opinion of him (in this way!) mostly changed when I saw him alongside Trump at that Trump rally. He stuck to his style, totally mismatched to the 'Merkin Hoo-Yah crowd, and for me that put him into perspective. (Trump's style was just
so much worse, no matter how many times I watched his and his opponents' rallies. I was a glutton for punishment for so many months!)
then preceded to talk people rather than policies. It just doesn't sound like leadership is your issue.
I'm not sure what you're saying, really, but I suppose I do set more store in what I have against the party, in this exceptional case.
As an aside, I voted UKIP and Leave. I can assure you that trolling had nothing to do with it.
You're not the kind of person using "kekekek" and "fam",
especially when it is suggested in private that these are annoyingly distracting, and other memes with variously uninteligable/distracting natures. You may not be "my kind of person", but you at least seem to be trying not to obfuscate everything you say in a neo-elitist manner, just for the 'lulz'.