Voted for "lean toward consequentialism". As someone once put, I consider the “fundamental” rules to be consequentialist¹, but some of the approximations I use because the fundamental rules are infeasible to calculate from scratch every time resemble deontology or virtue ethics, much like QFT and GR are time-reversal symmetric but thermodynamics isn't. Also, ethical injunctions (i.e. fudge factors in my prior probability that certain behaviours will harm someone to compensate for cognitive biases) and TDT-like game-/decision-theoretical considerations make some of my choices resemble deontology, and a term in my utility function for how awesome I am make some of my choices resemble virtue ethics.
I assume that, despite the name, people here don't take consequentialism to imply strictly CDT. I still think that in the True Prisoner's Dilemma against a paperclip maximizer known to use the same decision algorithms as ourselves it's immoral to defect.
May the reason why so many philosophers don't vote for consquentialism is that they're thinking about pure CDTical act consequentialism?
Despite being (IMO) a philosophy blog, many Less Wrongers tend to disparage mainstream philosophy and emphasize the divergence between our beliefs and theirs. But, how different are we really? My intention with this post is to quantify this difference.
The questions I will post as comments to this article are from the 2009 PhilPapers Survey. If you answer "other" on any of the questions, then please reply to that comment in order to elaborate your answer. Later, I'll post another article comparing the answers I obtain from Less Wrongers with those given by the professional philosophers. This should give us some indication about the differences in belief between Less Wrong and mainstream philosophy.
Glossary
analytic-synthetic distinction, A-theory and B-theory, atheism, compatibilism, consequentialism, contextualism, correspondence theory of truth, deontology, egalitarianism, empiricism, Humeanism, libertarianism, mental content externalism, moral realism, moral motivation internalism and externalism, naturalism, nominalism, Newcomb's problem, physicalism, Platonism, rationalism, relativism, scientific realism, trolley problem, theism, virtue ethics
Note
Thanks pragmatist, for attaching short (mostly accurate) descriptions of the philosophical positions under the poll comments.
Post Script
The polls stopped rendering correctly after the migration to LW 2.0, but the raw data can be found in this repo.