Clinton won with only 43 percent of the popular vote. Not much of a mandate. But he came in first in 32 states and the District of Columbia. Clinton ended up with almost 70 percent of the electoral vote. That's a mandate.
All voters are equally important.
Because of the Electoral College, voters in big states count more than voters in small states. An undecided voter in, say, Michigan is very important because his or her decision will help you carry that state's 18 electoral votes. You can win 100 percent of the vote in Delaware and still get only three electoral votes. Life is unfair. So is politics.