Interest Groups and the Senate Mid-Term Money

Much has been made of the fact that the 2014 mid-terms were the most expensive mid-terms ever, at a cost of $4bn. More has been made of it in the wake of the 2010 Citizens United verdict by the Supreme Court, the impact of which is undeniable in this election. This excellent article gives you a quick view of the money spent by outside groups for Senate elections in one handy chart. The statistics herein are the kind of details that should be included in essays on the impact of this ruling or for US elections/US Pressure Groups topics.