most of Nadler’s campaign funds come from the Nadler Victory Fund, whatever that is. He also gets money from Moveon.org, Facebook and Disney, among others.

https://www.fec.gov/data/receipts/?two_year_transaction_period=2018&data_type=processed&committee_id=C00290825&min_date=01%2F01%2F2017&max_date=12%2F31%2F2018