The “donors” who were fraudulently credited with making sizable totals should demand refunds.
Or be considered an accomplice.
“You donated $100,000 to Harris, through ActBlue”.
“No I didn’t”.
“Someone may have stolen your identity, credit card info”.
“I don’t care. It wasn’t my money. I support Harris anyway. If I could send that much money I would”.
Until proven otherwise, they are knee deep in criminal activity.