Supposedly he is a voracious student of American politics so he would know he’s only addressing half of us.
It may be far more than half. Both Canada and the UK are more inclined to present certain news and views to America than the "American" media is so the market is there.
The vote totals do not reflect the true hearts of her people (or any truth).
“Supposedly he is a voracious student of American politics so he would know he’s only addressing half of us.”
Could he be trying to either goad or encourage half of us to do something about it?