From the introduction:
…..In our research, we explore the relationship between wealth disparities and campaign contributions, documenting the growing concentration of campaign contributions among a small sliver of very wealthy U.S. donors. Despite an explosion in the number of citizens donating to campaigns in recent decades, we find that in recent decades the total share of campaign contributions has risen sharply from the wealthiest donors, the top 1% of the 1% of the voting age population. Mass participation has failed to counterbalance this trend.
Although recent changes to the legal and regulatory environment have contributed to the trend, they are at best a partial explanation. Contributions were becoming more concentrated long before the 2010 Citizens United and the 2014 McCutcheon cases were decided by the Supreme Court. To fully make sense of the rise of big money, its causes and consequences, we must examine broader economic trends and understand how the political behavior of the super rich has changed over time. Our research examines donation patterns of the super-rich – and explores their broader implications…..