Voter turnout has always been an issue and a problem in United States elections. While all the votes have not been counted for this year, it is looking like the voter turnout is actually above that of the 2012 election, at 56% overall. In this election, it was mostly Democrats that decided not to vote (Bernie Sanders supporters) and that tilted the Presidency to Trump's favor. Clinton under-performed Obama's numbers of 2012 by more than 5 million votes.
This was the big problem with Hillary Clinton. Many of Obama's supporters and voters did not supported her all the way...in the end she lost the race to the other side. However, things like these are now for the books as the election is over and we now have a President-elect Trump coming to the White House this January.
Many people in USA can not yet believe what happened and they want to scrap the Electoral College set-up but that is so myopic...changing the system just to suit someone's political interest will not result into something positive for the country and will only produce more problems.
Clinton rigged the democrat primaries to win the nomination. So she doesn't have any moral right to complain now. During the election campaign, she demonized certain voter groups, such as blue collar whites and conservatives. That is the reason why she lost.
