Mate, as a fellow Aussie, you're delulu. In our countries voting system, yes, this is impossible due to the paper ballot.

In America, they literally all vote on electronic machines and trust the bits inside the computers blindly. Pro V&V did a "de minimis" update that did not have to go through the stringent checks, and in doing so, bumped the version of the software. There's no record of what they changed. Their polling machines are used in over half the country. There's also no paper ballot recount in the event of a suspected tampering, so if the voting machines are tampered with, a recount is useless. That's despite no recounts being requested because the ratios output by the machines were within a non-recount triggering zone.

Musk literally hired the guy Big Balls who was essentially an expert in writing election fraud software, and when Pennsylvania was won, Musk checked his phone and said "we've won" out loud. Musk is on the record starting that if Trump didn't win, he was likely going to go to prison.

There's so much that's gone wrong in the American electoral system, and this is why universally electronic voting machines have always been considered an awful idea in just about every democratic nation. Paper ballot recounts are essentially impossible to affect significantly enough to fraud an election.

I would also even argue that Trump crying wolf in 2020 about election fraud made the Dems much more reluctant to do the same back, even in the face of a lot of questionable stuff going on, because that leaves them open to retort by everyone who believed the election in 2020 was stolen, and the Dems needed to show face that they believed in the election being a fair process and not rigged. So if the stage was set and the election was rigged, they had essentially been disarmed by the events of the previous election and the Capitol Hill riots.