He has about 8% of the vote – I’d call that pretty fringe.
What Trump says makes the main news headlines, he has become a high profile Republican politician whose comments are increasingly being discussed by political pundits, but if you want to dismiss him as an irrelevant fringe politician whose comments will never be discussed in mainstream politics then that’s up to you, you are of course free to think whatever you want to think. However subeditors, headline writers, and TV/radio news input controllers, don’t appear to agree with you.
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“United States shifted fairly significantly to the left. While the UK shifted to the right”
So they’ve both moved towards the other?
I don’t understand the point of the question. Are you suggesting that US politics hasn’t shifted to the left with the change from Bush to Obama, and that UK hasn’t shifted to the right the change from Brown to Cameron?