Hillary gets into office and there won't be another election. The two-party system as we now know it will no longer be.
I disagree.
To begin with, the idea that Hillary Clinton can somehow abolish elections is not credible. If nothing else, the candidacy of Donald Trump represents a latent and widespread dissatisfaction and opposition that neither she nor her party could actually contain.
That said, certainly the two
parties as we know them have reached the end of the road. The interests of those who control
both parties no longer correspond to those of the people who, mainly through habit, have claimed to belong to them. The Democrat party mainly serves the very rich and powerful of this country, and can no longer plausibly portray itself as the party of the poor and oppressed. The GOP ... well, it has apparently ceased to stand for much at all, beyond putative opposition to the Democrats.
Hence the effective candidacies of Sanders and Trump, whose main attraction lies in the perception that they're not of either party.
Thus I can imagine some sort of reshuffling of the two-party system into combinations that serve: Party A - normal people, whose numbers are great but whose influence is small; and Party B - "the elite," whose influence is great but whose numbers are small.
In temperament, inclination, and underlying moral bases, those who identify as conservatives would fall mainly into "Party A," although those typified by the bigotry that overtook TOS would likely drift toward into a cranky and ineffectual know-nothing sort of party, just as those who supported Sanders will drift into a cranky and ineffectual socialist wing.
That's how I see the two-party structure shaking out ... though it will take a period of crisis to make it happen. That, unfortunately, is nearly upon us, thanks to the utter incompetence of the current administration, and the utter unfitness of either of the current candidates.