The main dark-money group backing Kamala Harris and Joe Biden raised a staggering $613 million last year, while its pro-Trump counterpart brought in $275 million, new filings show.
Both Donald J. Trump and Kamala Harris benefited heavily from so-called dark money in 2024, but Democrats leaned more on the practice of funneling money through nonprofit groups that do not have to disclose their donors.
His library foundation has told the I.R.S. that by the end of 2027 it expects to bring in just $11.3 million — not nearly enough for a traditional presidential library.
Former President Joseph R. Biden Jr. has only just begun to raise money for a presidential library, starting with an event for potential donors on Monday in Washington.