If there was no voter fraud, Trump might have won the popular vote too. As it stands right now, it looks like Hillary won the popular vote by around 450,000 votes. It is estimated that approximately 5% of illegal aliens vote. So that is around 800,000 people. They vote democrat by a margin of about 4-1. So if 8000,000 illegal aliens voted, and they voted for Hillary by a margin of 4-1, that would net Hillary an extra 480,000 votes. Without those illegal votes, Trump may have won the popular vote. Here is a Washington Post article about this subject:
https://www.washingtonpost.com/news/...mber-election/