This site on voting discusses some of the voting dilemmas encountered in this section:
This site by the American Mathematical Society gives an excellent overview of voting and elections.
This site gives some references to Arrow’s Impossibility Theorem:
You can use this site to find real-life examples of voting dilemmas:
This site has an agenda aimed at proportional representation. Arrow’s impossibility theorem proves that there is no perfect voting method, but this site does make interesting reading.