Trump & Crew are either brainless, or are being deceitful. Some mail-in votes are allowed to be postmarked as late as election day. It may take up to a week before they get counted. That's not fraud. Hello. Different States have different rules (see links below), and different Counties have different procedures. Our Oval Office [Mafia-like] DON knows all this. A short while ago, his legal team could not produce one single instance of mail-in voter fraud during a Court Case. Nevertheless, The Don continues to sell the Big Lie to his supporters; and apparently, many of them believe it... with no proof. Incredible.
Here's an official in Clark County, NV explaining things---
He shows a lot of patience in the Q&A.
Here's when different States begin processing ballots---
Here's Bernie's take on it all well before the election---
More or less on the mark so far... thanks to Trump's idiotic claim of victory, & then filing lawsuits before all the votes have been counted.
Though he's nearly 4 million votes BEHIND in the popular vote, Trump has received a lot of votes mainly because of this: his policies reflect a nationalistic neoimperialism that resonates with folks who believe the USA should rule the world. Not conquer the world in the old sense of "rule", but control the globe by being its police force, by financial boycotts/sanctions, by controlling natural resources in other lands, by assassinations, by military threats & interventionism, by spying on allies, etc.
Whether they admit it (or are even aware of it) or not, those folks seem to favor the idea of EMPIRE. It makes them feel secure. They think it will make their economic/financial situation secure as well. People like that are drawn to the "strong-man", bullying, crass type of Big Daddy "leader". That's especially true if he wraps himself in the American Flag and professes adherence to the belief in Big-Daddy-in-the-Sky-Who-
Yes, obviously the above is an opinion. 
I base it on History and a keen interest in USA politics.
Everyone Be Well
p.s. No voter fraud has been shown in the election thus far. Trump, as usual, is gaslighting; he's just blowing smoke. The Mob lawyer, Roy M. Cohn, taught him long ago: if you repeat a lie over & over, people will come to believe it. And that's Trump's primary modus operandi. Surely everyone knows this by now, eh?
