Commentary Last week, New York City held its primary election for the Democratic candidate for mayor, who will surely be New York’s next mayor. Yet the results were still unknown, with changing updates for days. In fact, we may never know the real winner, because of an invention by progressives to make elections “fairer.” This invention, called ranked-choice voting, forces voters to choose not just the candidate they want to win, but to rank the candidates by preference. This unbelievably stupid method of voting is a more serious threat to American democracy than even last-minute voter registration, ballot harvesting, and voting without ID. The threat is even worse than the potential for fraud and mistakes by other forms of computerized voting, because with ranked-choice voting, any candidate can end up winning, and the choice rests with a few computer programmers who maliciously or innocently choose an algorithm that picks a …