Here seems a good place to start. Essentially, if you live in a large country, and the split of support is not extremely close to 50/50 then your vote has an exponentially small chance of determining the winner. Thus the signalling effect of voting third party is probably much bigger.
Today's post, Stop Voting For Nincompoops was originally published on 02 January 2008. A summary (taken from the LW wiki):
Discuss the post here (rather than in the comments to the original post).
This post is part of the Rerunning the Sequences series, where we'll be going through Eliezer Yudkowsky's old posts in order so that people who are interested can (re-)read and discuss them. The previous post was The American System and Misleading Labels, and you can use the sequence_reruns tag or rss feed to follow the rest of the series.
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