Donors who have given $1 million or more in this cycle contributed $120.1 million to super PACs in the April-to-June fundraising quarter. That’s more than twice the $58.8 million they donated during the previous three-month period.
Republicans accounted for six out of 10 of the biggest super PAC donors in the second quarter.
The biggest contributors: Las Vegas casino magnate Sheldon Adelson and his wife, Miriam, who gave a combined $30 million to the Congressional Leadership Fund, which is aligned with House Republican leaders.