A federal judge (appointed by Trump) ordered the Trump campaign to put up or shut up about mail-in voter fraud. Last Thursday, the judge gave them until Friday to responded. All I’m looking for is if and/or how the Trump campaign responded. I can’t seem to find any updates.
Found something on this! I’d been wondering too: Trump campaign fails to show evidence of vote-by-mail fraud, filing reveals | US news | The Guardian
Here’s another update.
Background: Trump campaign sues the Secretary of the Commonwealth of Pennsylvania ( == what other states would call Sec’y of State, I guess) and each of the state’s county election boards to enjoin against offering drop-boxes for ballots, claiming major fraud would surely ensue. As noted in OP, judge orders campaign to provide evidence of such by Friday (yesterday).
TL;DR: Trump campaign submits 524-page document. It contains only scant evidence of fraud, none of it having anything to do with mail-in ballots. (ETA: But parts of document were redacted so we don’t really know what was in those parts.)