We need the pie chart system for how people get into the office of the president of the United States. How this would work? Let's say you have an election and the democrats win 55% of the vote, the GOP wins 40% of the vote, and the libertarians get 5% of the vote. Under the future NPV voting system, which I think is inevitable as more and more states are signing on to NPV whether or not you like it, the democrats could win the whole presidency even if a majority of the population doesn’t support them due to third parties. Even if Democrats win the majority, they are alienating other non democrats by being in office. As society becomes more liberal and the democrats continue to get more and more power, they would be alienating the few right wingers that exist. With non Democrats realizing that they will never be able to win another presidency again, they would want to break away from the country causing a war.
How to prevent this: The pie chart method. Let's say you have an election and the democrats win 55% of the vote, the GOP wins 40% of the vote, and the libertarians get 5% of the vote. Rather than the democrats getting all of the presidency to themselves, they split it based off of their voting turnout. In the situation mentioned previously, they get their representative to be president for 55% of a term, the GOP gets their representative to be in power for 40% of a term, and the libertarians get to be in office for 5% of a term. No one is without a voice in the presidency. Everyone gets power, and no one is left out.