Rep. Maxine Waters, D-Calif., paid her daughter another $24,000 in campaign cash during the most recent quarter, Federal Election Commission records reviewed by Fox News Digital show. 

Karen Waters, who has been organizing slate-mailing operations to bolster her mother's re-election for nearly two decades, and her company, Progressive Connections, have received more than $1.2 million since 2003 for campaign services, including "slate mailer management" fees and "campaign managing services."

A "Citizens for Waters" campaign committee filing from earlier this week shows that the younger Waters received $24,000 from the committee between January and March 2022.

Slate-mailing is an uncommon practice in federal elections, where a consulting firm is hired to create a pamphlet of sorts that contains a list of candidates or policy measures, and advises voters how to cast their ballots.

Rep. Waters was reportedly the only federal politician to use a slate-mailer operation during the 2020 general election.