Then they're out of touch. A majority of US citizens are fed up with the mess the DC crowd and their corporate sponsors have made of the US. I could imagine a real persuasive argument that a third party President Trump is the way to clean out the DC sewer, across the political spectrum.
Isn't it likely that a majority of US voters would vote against the dynasty situation?
No! At best majority of Republicans will vote for Trump.
Majority of democrats will obediently vote for Hillary.
Bush versus Hillary = Hillary wins (without Trump in the race, I am betting my farm on Bush nomination)
Bush versus Trump (3rd party) versus Hillary = Hillary wins
Trump versus Hillary = Trump wins.
“Isn’t it likely that a majority of US voters would vote against the dynasty situation?”
From your lips to God’s ear.