Because put simply the demarats are so bad at everything that they once again underestimated exactly how many votes they would have to fake to squeak out the victory. This is why they are very obviously, and very sloppily dumping large batches of one sided ballots and ballots for biden that dont vote on anything else, they were so sure of themselves that they failed to anticipate how big the trump hump actually was and now they are desperately trying to catch up. At this point they are like a cornered animal. If they can fraud their way to victory they can magic wand all of this under a rug and put america back to sleep, but if they lose heads are going to roll. So they have no choice but to lie, cheat, and steal as much and as fast as they can caution cast to the wind. Call it a cope if you want, but any rational person looking at this, how its only in democrat controlled environments, how they are literally suing for less transparency in government while orange hitler sues for more transparency, how they are blatantly breaking every rull and law that gets in their way with reckless abandon, all of it adds up to massive amounts of fraud. And other than the pre election Veritas drop in texas that was linked to a gop congressman, I have yet to see a single case of fraud that favors a gop candidate.
The polls told them that they were going to blue wave and sweep this election according to their calculations. Their plan was to inject just enough votes to A. Win and B. Be outside the margin of error for recounts. They just massively fucked that all up and are now desperately trying to fix that fuck up. And to all the ridin with biden and other lefties that are smugging it up on this I would remind you that the demarats corruption always bites them in the ass in the end. You may very well steal this election and defeat orangemanbad by way of corruption, but that victory will bring doom to your entire party, if it hasnt already done so. The cost of this victory will completely salt the earth for them moving forward. The midterms will be a blood bath, until then they will be gridlocked, and just like removing the 2/3 vote on supreme court nominations, eventually their dirty tricks will be used against them by a much more effective party. Republicans for all of their faults are a much more risk adverse party than liberals, this is a trend that has held firm for eons in political timelines.
If Trump loses to this bullshit, he will spend the rest of his life destroying every single political adversary, he will start his own media company, he will build his own internet, social media, the works. He will devote his every waking moment to rubbing the political establishments nose in this for ever. Why? Because he is Trump, he angry tweets while taking a shit in the white house. Once out of the bottle, there is not putting him back in. If they achieve their dream, they will ironically wake up in a nightmare worse then they could possibly imagine, and it will take at most 2=4 years for that to happen.