Most western elections are won and lost by only a few percent. That means nearly half of voters voted against the winner. Just because someone swings victory by a few percent does not mean they have any great support. Look at the recent American presidential race. Hillary got 2 million more votes than Trump but the counting system gave Trump victory. Do you seriously think that means all Americans should accept Trump as leader ? And before the Hilary haters and Trump lovers all jump in I am using this as an example only. IMO unless a candidate gains at least two thirds of the vote they can not claim any sort of popular mandate.