The 2014 midterm elections panned out to be the most expensive midterms ever, with total spending surpassing $3.67 billion. The country even saw its first Senate race eclipse the $100 million mark in North Carolina, where Republican Thom Tillis thwarted incumbent Sen. Kay Hagan (D).
FindTheBest, an online research engine that collects and presents data on a variety of topics, took a look at the Republican and Democratic House and Senate campaign committees' spending this cycle. Below, hover over the maps to see how much the respective committees spent in each state. States cast in grey did not have a contest.