Hands up all those that truly understand the American voting system..........anyone??
From what I make of it people can vote on voting day, but the postal votes can be sent in anytime from a month before the day or up to a week after. So, if true {I'm sorry to say} this is where I have to agree, to a certain extent, with Trump. The system does open the door for postal ballots to be manipulated. The Americans sending in postal votes have had a month to send them in prior to election day and it appears they still accept them after polling day, this shouldn't happen, so ergo, the last day to receive a postal vote is voting day, anything after should be binned unopened.
Unfortunately Trump being Trump is acting like a despot, as soon as he appeared to be in the lead he shouts "STOP COUNTING!!" and from what I've seen of Trump supporters they are not going to accept a Biden result especially as Trump is calling foul.
We have a lot better system than America mainly because our votes don't take so much counting, unfortunately the big drawback with our system is {and always has been} very soon after the result is announced we soon discover we voted the wrong people in.