Do you mean how would the election go if it was a straight democracy?
Because that's how you get mob rule.
Hillary won California by more than 4 million votes, but that doesn't give her any advantage in the current electoral college system.
Half the country lives in a handful of large cities. If the only thing that mattered was the popular vote, there would be no reason for any presidential candidate to give a shit about anyone except the people in those big cities. Obviously these cities are reliably made up of left wing communists, so it makes sense that the Left is crying about the electoral college right now. They would gain a permanent advantage over all other political parties by having the country switch to a popular vote system.
This country is basically a collection (or Republic) of smaller countries (states) and our voting system is designed for STATES rights, more than the rights of individual voters to steamroll the rest with their dumb ideas (mob rule). If we changed to a system where it was one person one vote, or something similar, you would see many states leaning towards leaving the union.
DISCLAIMER: because half of you have cooked your brain with drugs, I know I have to say this. I self identify as Libertarian. Which is technically part of "The Left" in the United States. But Democrats, and the Left as a whole have swung so far towards communism that I really don't think it can survive long-term. More people on a college campus today can ramble minutia of the theories of Karl Marx than could tell you what basic Western values are. Just being conservative leaning in political talk makes you counter-culture