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Citizens United, States Divided: An Empirical Analysis Of Independent Political Spending, Douglas M. Spencer, Abby Wood

Indiana Law Journal

What effect has Citizens United v. FEC had on independent spending in American politics? Previous attempts to answer this question have focused solely on federal elections, where there is no baseline for comparing changes in spending behavior. We overcome this limitation by examining the effects of Citizens United as a natural experiment on the states. Before Citizens United, about half of the states banned corporate independent expenditures and thus were “treated” by the Supreme Court’s decision, which invalidated these state laws. We rely on recently released state-level data to compare spending in “treated” states to spending in the “control” states, …