Earlier quoted context omitted.
Technically, only ~57% of eligible voters actually voted. Of those, about half voted for Trump. So only about 27% of all eligible voters actually voted for Trump. That is pretty standard for a US presidential election. Those are the rules for democracy, so he is the legitimately elected president. https://www.vox.com/policy-and-politics/2016/11/10/13587462/...
"Those are the rules for democracy, so he is the legitimately elected president." Absolutely according to the rules in force in the USA. Other countries have different rules, and I don't think that there is some set of unique 'best rules' for this. UK tomorrow many of us are voting for the mayors of 'combined authorities'. The voting paper has two columns for each candidate and you get to state a first preference and…
Mr Street said it was the start of a "new, urban Conservative agenda".
Overall, 26% of eligible voters chose a candidate with most people staying away from the polling stations on Thursday." [1]
So, the man has a majority of less than 2% in an election where just a tad over one quarter of those eligible actually voted. He is in charge of a unitary authority where most of the constituent authorities have Labour administrations.
What kind of mandate do you think this chap has?