I'm going to be a bit pedantic; that's 40% of eligible, who intend to vote, and self select into responding to polling. That is nowhere near 40% of Americans. Its important not to conflate relative support of political candidates with American sentiment at large, sometimes they diverge strongly.
But I more or less agree with your general point. But I would counter that while we are at the height of political fractiousness, it may not be worthwhile to spend a lot of time trying to convince people. It may be more effective to succeed with good ideas, like trade and liberal immigration, and pluralism then invite your former opponents to enjoy the benefits later. Maybe...
Edit: of course, this is for the primaries, but many folks will vote along party lines no matter what.
http://www.cracked.com/blog/6-reasons-trumps-rise-that-no-on...
Media and many businesses are excluding and mocking a huge chunk of America. I deal with that chunk on a regular basis. Most are decent, hard-working people with different political views is all. A small percentage of them are as bad as portrayed in some category. You wouldn't think that from how liberal organizations or media portray them. Huge untapped market for politics and business if people market it the right way. The shocking thing is lack of Republican candidates really appealing to them. Even business people as I can think of plenty Republican founders and executives that make a better President than Trump. Mind-blowing.
How are they getting blacklisted by the economy? Project Include has the right to choose who they associate with.
As does anyone else who blacklists.
Also, obligatory mention that "blacklist" and "whitelist" are racist terms, and mention of similar spirals of idiocy such as [0] and [1].
The second group are all white nationalists. They honestly believe that Obama is a Muslim, that Jews control the banks and media, that immigration is bad for the country, etc.
These people I have no problem with blacklisting.
IOW, a very large part of Trump's core supporters are simply Republicans that will vote for him because he is at the top of the Republican ticket. They would also have voted for Rubio or even Kasich. They don't like a number of things he's said or done, but they will vote for the Republican before they vote for a Democrat (especially Hillary Clinton).
The minority, though, are not really Republicans -- they are truly a right wing nationalist cohort that is very attuned to things like Trump's "David Duke who?" initial response to his endorsement.
With respect to the other comment about Republicans reaching out to these people: the Southern strategy is a 50-yr old strategy that the Republican party has consciously and publicly tried to move away from in the last 8 years as demographics have made it less and less likely to deliver the Whitehouse. Yes these people have been loosely attached to the Republican party, but as the Republican party moves away from them, they've also moved away from it.
The natural thing, if we didn't have a legally supported two-party system, would be for a Marie Le Pen style nationalist party to form behind Trump.
As for, "people who have all the weapons", unless they have tanks, an air force, a navy, and AA capability, they're still just idiots with popguns who were already joining militias and similar groups en masse over the last 8 years; appeasement does not work.
I know people say that, but let's not forget, our armies are still only good fighting traditional armies (like we did in WW2). We are still no good in invading and not-killing civilians (which would be the ultimate priority in a SHTF/TEOTWAWKI scenario).
Earlier this year 5 cops were shot down by a veteran who got agitated by the shootings of African Americans by the police. If SHTF scenario happens, a lot of veterans would be in control of the militia groups, training people, guiding them (pretty much the same thing which is happening in Iraq/Syria, except much worse).
No I am not predicting a civil war or a rebellion, just saying that among all the countries I could bet on regarding a civilian population's ability to defend itself, Americans are as armed as they need to be in case such a situation arise.
The point is to show the much larger group of people who are just going along with him, or considering it that this violent, racist, misogynist set of behaviors and beliefs is not acceptable.