The discontent and anger is completely understandable. A lot of people feel betrayed, sold out.
But history also shows that anger and the civil unrest and social breakdown deriving from the anger -- for possible example consider on the anti-Trump protesters -- most often favor the liberal, communist, and anarchist agendas. And note how much the liberal media has been stumping for Trump. CNN reported on a Trump rally in SLC a couple of days ago. From the video and discussion, viewers would have reasonably believed the rally took place in our large convention center with thousands in attendance. Nope. It was a small event center (think hotel ballroom) with a few hundred supporters in attendance.
Maybe the media just loves a controversy because it brings in viewers and raises ad revenue. Or maybe the liberal media knows that the surest path to a Hillary presidency is Trump as the GOP nominee.
Put into less conspiratorial terms, there are many in the GOP who won't vote for Trump.
A recent poll indicates that Hillary would be very competitive in Utah if Trump wins the GOP nomination. Utah hasn't voted for a Democrat Presidential candidate in over 50 years. The last time Utah went Democrat was in 1964 when we cast our electoral votes for Johnson over Goldwater. The 3 previous elections were for the GOP, so we are back to 1946 (Truman) before we have a string of Presidential elections in which Utah voted for the Democrat. Even if the poll is wrong or manipulated in some way, to be able to manipulate a poll to show such a thing in Utah shows the extent to which much of the GOP grassroots has real issues with Trump.
In addition to those who would vote Democrat (or third party) over Trump, there are a lot more who probably just stay home and don't vote at all. That has ramifications all the way down the ticket. Remember when folks couldn't bring themselves to vote for Romney?
Hillary winning the presidency is terrible. Hillary winning with a majority Senate is catastrophic as the SCOTUS hangs in the balance. Hillary winning with a Democrat majority in both houses is probably the end of the Republic.
Losing a bunch of governorships and State legislatures would also be bad as one can easily see such losses persisting until after the 2020 census and redistricting.
Charles