Another reason is all the investigations that have been launched into voter fraud. They figure if they back off, it will take the issue off the radar and there won’t be a clamor to investigate.
The situation in PA with the discarded mail-in votes didn’t help the Left’s cause at all. Sort of hard to say there’s no fraud with situations like that being discovered.
DOJ orders Pennsylvania county to change ballot practices after ‘troubling’ findings
https://www.foxnews.com/politics/military-ballots-trump-pennsylvania