Two recently-published political science papers make one thing clear: money in politics is killing democracy. Find out how wealth has become more important than votes for representatives, and why it shouldn’t be.
Martin Gilens & Benjamin I. Page’s paper “Testing Theories of American Politics: Elites, Interest Groups, and Average Citizens” - https://www.princeton.edu/~mgilens/Gilens%20homepage%20materials/Gilens%20and%20Page/Gilens%20and%20Page%202014-Testing%20Theories%203-7-14.pdf
Thomas Stratmann’s literature review: “Some talk: Money in politics. A (partial) review of the literature.” - http://researchgate.net/publication/5154446Some_talk_Money_in_politics._A(partial)_review_of_the_literature/file/9c9605208c4e7433bf.pdf
An interview with Gilens about the implications of his paper - http://talkingpointsmemo.com/dc/princeton-scholar-demise-of-democracy-america-tpm-interview
A Freakanomics evaluation of how campaign spending influences election results (i.e. not appreciably) -http://freakonomics.com/2012/01/17/how-much-does-campaign-spending-influence-the-election-a-freakonomics-quorum/