It is common in various countries that large part of the population does not vote.
What does this have to do with the point? I was pointing out that it is unrealistic to assume that the majority of the US population despises Trump, yet he won the elections in a dual party system. That is because if you despise one of the parties in such a system then the choice is very clear.
some of them voted for him because he isn't a Democrat.
Then if I should take both this point and the one above as true, the conclusion should be: over half the Americans despise Trump, but a larger quantity despise Democrats more than Trump.