Trump and another 4 years - NOT amateur radio

Looking at the USA from a European perspective President Trump seems a disaster. He comes across as inept, stupid, and a poor choice. However, he was elected and the US economy looks quite good. The most likely candidate to stand against him is 78 years old I believe and had a heart attack last year I think.

It seems to me as if President Trump could get another 4 years in office. Personally I cannot understand how he could have been chosen. Maybe the voters who voted for him wanted to be listened to and these people were fed up with their leaders in the past.