Not for a while if ever and if JB/KH win, they'll be POTUS 46* and 47* with asterisks next to their names.
I've worked as a election officer for years and the rules say that pretty much any time poll workers interact with voters there have to be workers from both major parties present to make sure everything's on the level. That goes out the window when the polling/counting locations say "we're done, everyone go home" and the republican workers leave and the democrat workers stay and go back to work. Most poll workers I've worked with are like anyone else: normal people with a different political (or same) political view. However there have been a few leftist workers that I'm >90% sure that if they were left alone they would cheat like crazy to help their team win.
Up until the last two cycles our state always had numbered ballot pads. The part of the ballot that stays on the pad had the number a detachable stub had the number and I think the ballot had the number too. The number goes in the voter roll book and the voter got their ballot with the stub. They fill it out and the ballot went through the machine into the locked ballot box and the stub went in another locked box. It was clear how many ballots were given and where each ballot came from. A couple years ago they switched to the number being on the ballot pad only. Once the ballot was torn off every ballot is the same as all others. It would be possible to get a bunch of blank ballots to stuff the box with and they couldn't be differentiated from any other valid ballots and it's impossible to tell where or who they came from.
If someone cheated like that it would be "voter fraud". That probably happened in this election but I think one of the big concerns this year was "election fraud" which is cheating on a larger scale by changing or adding votes on the back end.
Here's a video about how the vote counting system users can change votes. Surprise, youtube has flagged it as being "inappropriate"
https://www.youtube.com/watch?v=ficae6x1Q5A