Judging by the situation in the United States, you have to elect in the following way:
– for a whole year bombard the population with polls far from reality, where the Democratic candidate simply knocks outs his competitor;
– send out an unknown number of ballots by mail, so that later they can be counted uncontrollably;
– do not allow OSCE observers to visit some polling stations;
– in states where the current President was confidently leading, suddenly show that 100% of the ballots that arrived by mail are votes for his competitor;
– register deceased voters and indicate a higher number of voters than the actual number of citizens eligible for voting.