> Like the number of voters?
3 million more voters voted for Clinton but Trump won because of the Electoral College.
3 million more voters voted for Clinton but Trump won because of the Electoral College.
Gerrymandering is perhaps the most blatant example, but it's mostly a question of feeling the next election will be fair. If things are down to a coin toss of votes then you can feel it might flip next election. But many US elections don't even have someone running for the opposite party.
But it's the far from the only issue. Gerrymandering, hanging chad, electronic voting machines / hacking, voter rolls, death of the filibuster, etc are all on various groups minds. Individually they don't mean much but the narrative is just as important as the reality.
This sour grapes whining by Clinton supporters is like a baseball team complaining that they lost a baseball game because while they scored fewer runs they had more hits and fewer errors. Except that's not how baseball games are scored, and that's known from the beginning of the game.
(Just to get it out of my way: I did not vote for Trump, and I've never supported the man. I'm just sick of people complaining about losing by the rules of the system they knew was in place when they started.)