U.S. billionaires gave 37 times as much in political contributions in the last election as they did 10 years earlier, according to a new study focusing on the richest Americans’ political giving.
During the 2018 election cycle, billionaires gave $611 million, up from $17 million in 2008, according to the report from Americans for Tax Fairness and The Institute for Policy Studies, two self-described “progressive” research organizations.
The study attributes the exponential growth to the 2010 Citizens United Supreme Court decision, which allowed companies and outside groups to make unlimited donations.
The study also showed that just a handful of big-spenders are responsible for nearly two-thirds of political contributions from billionaires over the last three decades as they become increasingly involved in elections.
From 1990 through this May, just 20 people made $1.3 billion worth of political donations, nearly 62% of all contributions from billionaires in that period, the study shows.
The biggest spenders were Sheldon and Miriam Adelson, casino magnates who favor Republicans, at $308 million; Tom Steyer, a hedge fund manager who backs Democrats and liberal causes, at $275 million; and former New York City Mayor Michael Bloomberg, who has given to both, at $181 million.
The totals do not include Steyer and Bloomberg’s unsuccessful campaigns for the Democratic presidential nomination in 2020. In that primary, Steyer spent $340 million and Bloomberg spent more than $1 billion.
(Bloomberg is the founder and majority owner of Bloomberg LP, the parent company of Bloomberg News.)
The rest of the top 20 included hedge fund managers James Simons, George Soros, Paul Singer, and Ken Griffin; investors Stephen Schwartman and Warren Stephens; Home Depot co-founder Bernard Marcus, Slim-Fast founder S. Daniel Abraham, and Facebook co-founder Dustin Moskovitz.
Giving by billionaires was relatively modest until 2012, when contributions jumped to $233 from $32 million in 2010, the study says.