Three of the four super PACs aligned with House and Senate leaders brought in record high amounts from their "dark money" affiliates in the midterms.
The American Petroleum Institute's latest tax filing reveals payments to an opaque group that has spent millions on ads promoting Henry Cuellar, Kyrsten Sinema, and other conservative Democrats.
As it collects record profits, Big Oil is donating more than ever to the largest Republican super PACs.
Progress Pinellas PAC has spent $4.7 million on ads and mailers attacking Republican candidate Anna Paulina Luna.
Proposal 1 would make more than 300 term-limited politicians in Michigan once again eligible to run for office.