To me, extreme right-wing voters are voters that are anti-immigrant, legitimately racist (I know that term gets thrown out a lot, but I'm saying here is where the term can actually apply), homophobic (as in, would like to federally ban gay marriage if given the chance), and most importantly establish their religious beliefs as the law of the land (as it happens, it is Christianity we are talking about here). These are the voters that resonate with things like banning Muslims, or assuming all Mexican immigrants are criminals, etc. These are the voters that believe climate change is not real because God would not allow that to happen.
(I'd love to break down left-wing extremists, but that's not relevant here.)
The "silent voter" you speak of are voters that traditionally could have voted Democrat, but due to the party's shifting platform from "the common man" to "social injustices" (or as the right likes to paint it, the "coastal elites"), the Rust Belt states were picked up by Trump, because these people, who may not agree with everything Trump and his base believes in, saw that Trump keyed in on dying industries like factory workers, coal miners, etc., and when you have a chance to put bread on the table to feed the wife and kids, you take it, all else be damned. These voters were forgotten by Hillary and are a HUGE part of why she lost.
TO ME, personally, I can't set aside the things Trump says and does simply because of my own personal economic gain. I think, PERSONALLY, as a citizen of the USA, it is my duty to vote for what I think is best for the Country, not for what may be best for me alone. Everyone talks about "look at the stock market!!1!" but to me, it reflects a larger problem America seems to have, and it's "Who cares if we are morally bankrupt? We're making money!" Because I don't live in a vacuum, and the things that happen around us affect us too whether we like it or not.
