The problem as it stands though with the number of voters that are actually involved in the process is that even with these low numbers of support (in the '40's) Trump could still win reelection in 2020.
How? He did NOT win the election; he won a technicality that hinged entirely on a minuscule voting differential in three “blue” states and that almost exclusively due to uneducated whites who normerly voted Democrat, but this time shifted due primarily to a combination of latent racism (i.e., “no one is paying attention to my white needs”), sexism (i.e., “women can’t be President. Full stop”) and the Comey effect (i.e., the catch-all effect of decades of lies about Hillary; the overwhelming bad press about Hillary; the coordinated Russian and Trump hacks and attacks against Hillary; the Sanders zombie civil war against Hillary also boosted by the Russians and Trump and the GOP) all of which combined to cause unprecedented numbers of late-voting undecideds to be swayed just enough by Comey’s allegedly unintended October surprise.
Iow, all factors that won’t be present in 2020 even if Trump were to survive unindicted until then. The only way he became President is through a massive amount of cheating and then only by the most minuscule of differentials in certain counties that now know what happened to them and what a complete clusterfuck Trump’s administration has been.
It’s not about core supporters. Forget they exist as they will always exist. It’s about the swing that for whatever last minute reason—as it was the late undecideds that caused the biggest problem—swung to Trump will now no longer have any of those reasons in place in 2020. Unless we run Oprah, I guess.
Hillary Clinton won the election. Americans wanted Hillary over Trump by millions of votes (not just a tiny percentage). When you include the other 20-40 million intended votes that—again, for non-partisan reasons—were not cast, but nevertheless still count in measuring the ideological “pulse” you understand that it was Trump that was the blip and is now being corrected, not some sort of fundamental problem inherent to all Americans.
This was the (white’s) right’s last ditch effort and to achieve it they had to collude with Russia; openly appeal to nazis; call Mexicans rapists; Muslims/Immigrants terrorists; grab pussies; suppress millions of minority votes; etc, etc, etc.
Iow, they had to be the absolute worst of the worst and pull out ALL the stops—including treasonous acts, ffs—and they STILL could not beat Hillary. What happened was a miracle (in their eyes; a nightmare in ours) just barely slipping by.
I don’t know what it is about the psychology behind “win” or “lose” being an all or nothing binary, but it’s got to stop. Hillary isn’t President because of a razor thin paper cut that took Herculean efforts to accomplish, not a game-changing machete hack from a dull blade.
Ah, when those "uneducated whites" voted for Obama were they then on the side of good? Or did you have disdain for them in '08 and '12, too. What about the uneducated blacks, are they a concern to you? And, as this seems to be forgotten a lot, this is the United States. Trump won because his campaign understood that.