Lies and misdirection, combined with harsh punishments for persons objecting to the new policies.
A nice little war would be the classic method for distracting the population. A series of nasty terrorist incidents with high body counts would be another method to justify harsh police measures against political dissidents, all in the name of "public safety".
We will probably see both projects active shortly.
You don’t win elections that way- and the scale of necessary cheating would be obvious to any Mr. And Mrs. Six-Pack, who robotically vote Democrat.
The Democrats don't need to win elections. They already control the counting of the "votes" at a national level. The "elections" will turn out with whatever numbers they want.
They did it in 2020 and nobody stopped them. Nothing has effectively changed since then. They have every reason to believe they can steal the "elections" in 2022 and forever afterwards.
They don't care how obvious it looks.
Mr. and Mrs. Joe sixpack will be broke, unable to make their rent, and unable to afford groceries. They won't care if the Democrats cheat the elections as long as they get promises of some Government money to keep them afloat.
And when they find they do not qualify for the new Government benefit programs (wrong race or ethnic group) they had better keep their mouths shut, lest they be shipped off to the new "Economic Recovery and Retraining Camps".
No need to ship them off. Bring the re-education mob right to their front door. The mob gets to maraud and walk off with the spoils, and everyone else on the block gets the message.