I recently strong-downvoted a post that I would have weak-upvoted if it had been at a lower karma. In general, I usually vote primarily based on what I think the total karma should be. I'm curious whether other people do similar things.
This is both a question and a poll. The poll is in the comments; it works via upvotes but there is a karma balance comment. (Note that one can recover the non-weighted results (i.e., number of votes) by hovering one's mouse over the current score.) This is about votes on LessWrong only.
I'm also wondering whether this behavior is, in some sense, anti-virtuous. If everyone votes based on what they think the total karma should be, then a post's karma reflects [a weighted average of opinions on what the post's total karma should be] rather than [a weighted average of opinions on the post]. This feels worse, though I'm not entirely sure that it is.
Correction: as jimmy points out, voting independently of current karma does not give you a weighted average of opinions on the post because there are only a limited number of ways you can vote.
Meta: There's been some speculation about this (maybe read after voting), but nothing conclusive.
Current non-weighted results (08/28 07:05 EDT) (TK is 'target karma'.)

I do think that it would be very bad if this happened. However I don't think this is likely. Quoting my other comment:
This seems even more true for downvotes - I think people realise that downvotes feel extra bad and only use them sparingly. For instance, I only really downvote when I think something has been a definite breaking of a conversational norm or if someone is doubling down on an argument which has been convincingly refuted.
I think a spread of opinions on what constitutes a downvote (and a general feeling that comments get less votes in general) would make the -80 only happen to super egregiously bad comments.