an electoral system that allows a candidate who gets less votes than another candidate to win an election is legitimate
If the rules had been different, we don't know what the outcome would have been. You must plan your strategy based on the rules of the game.
Stop whining about the rules and figure out a way to win in the future. Unless you can change the rules, you're just wasting your energy.
But to continually claim that the person that won based on the rules of the game is not legitimate is just plain sour grapes. No matter how big of a clown he is.