The seeming improbability of a Trump

In any past relatively normal period of American politics, say, at any time between 1876 and 2015, the mere fact that a colorable argument for disqualification to run for the presidency under Pt. 3 of the 14th amendment could be made would make a politician's candidacy for the nomination of a major political party completely nonviable. Add to that said politician had been indicted for 91 counts of serious crimes (and counting) and would likely be tied up in trials and other legal proceedings for much of the campaign, and the very idea that such a person should be a party's nominee, still less that they might have any chance at all of actually winning the presidency, would seem utterly preposterous. 

But this is the time we are living in, and this is what is happening.