Okay, despite the media's assertion that claims of voter fraud in the US Presidential Election are unfounded, there are enough first-hand accounts now to assert the opposite.
Although not fraud, the "Sharpiegate" incident in Arizona does really require a re-run of the election in that state.
Plenty of voters that had been given Sharpies to mark their ballot papers have had their votes cancelled. There are a number of people now checking the status of their ballots and getting the news that their vote had been cancelled. They can only assume the ballots were rejected because of the use of a sharpie.
In Detroit there are videos of vand and cars arriving after the votes had been counted with even more "late" ballots. All recorded 100% for Biden. If these were genuine ballots and not attempts to push Biden to a win, then there would also be votes for Trump in those Ballots. To be 100% for Biden is statistically impossible.
There is a video on Twitter circling that shows a vote counter flipping off a ballot form and then screwing it up and throwing it in the trash. Okay, not evidence of organised fraud, but how many counters were doing that? If only one, how many votes did he destroy? In a ballot that could come as close as hundreds of votes this single person could swing that state either way.
A re-run is required in Michigan.
And so it goes on. Vehicles turning up unannounced, with hundreds of ballots, unchecked, unsecured. people carrying ballots in open carrier bags.
Volunteer observers prevented from checking the validity of ballots.
What Trump is saying is the election process needs to be fair. The rules have to be followed and whichever way the vote goes, it needs to be legitimate. I'm not sure why the Democrats would be fighting that. Because whichever way it goes, the winning side can claim a legitimate victory.
The only way to object to that is if you know you are winning illegitimately.