Triangular Plot

This triangular plot shows the possible fractions of the population that are voting in the general election in the UK. The white circle in the plot represents the current estimate by opinion polls, which looks to be represented as the Labour and Liberal Democrat vote.

http://ex-parrot.com/~chris/wwwitter/20050407-it_doesnt_matter_how_you_vote_either_way_your_planet_is_doomed.html