I think it should be noted that even if Clinton wins this election, the Republicans will be even more likely to win the next one(in historical terms, they should be winning this one). I worry if they may be able to win no matter how bad their candidate is.
No way. History will cease to matter, because that history has all been against the backdrop of a monolithic 50 years of continuous control of the Supreme Court by the Republicans. Democrats have always been limited by the fact that the Supreme Court can strike down anything they do.
If Hillary wins, the game changes permanently, just as it did when FDR got control of the Supreme Court. She takes the oath, appoints a Ruth Bader Ginsburg type, and she has a 5-vote liberal bloc on the Supreme Court. The federal judiciary changes hands for the first time in 50 years.
Democrats on the Supreme Court have voted as a bloc for thirty years. Hillary will be able to rely upon them to rubber-stamp her Executive Orders. Obama has had to be cautious, because the Supreme Court could always reverse him. Hillary will not need to be cautious, and will use EO's swiftly to change two key things:
First - Voter ID will be called voter suppression, and struck down nationally. The Supreme Court will uphold that EO, on constitutional grounds. This will permanently shift the margin of fraud in favor of the Democrats by at least 1-2 percentage points in every state with a major urban population or a major immigrant population.
Second - Hillary will grant amnesty to the illegals, with a path towards citizenship, through regulation. By the time she leaves office in 8 years, millions of new Hispanic citizens, 75% of whom vote Democrat, will be on the rolls across the country.
The Republicans will never win another election if Hillary wins this one, because of command of the Supreme Court. That is the alpha institution in America, and that is the REASON that the Democrats have only been able to do little tinkers under Carter, Clinton and Obama. With control of the court, they can disregard Congress and rule by regulation as long as they have 34 votes in the Senate to prevent removal after an impeachment.
If Trump wins, he'll be in endless civil war within the GOP and he will be blocked by his own party. If Hillary wins, you will see reform faster than any time since FDR got control of the court. And the first thing Hillary will target are the levers of political control, ensuring permanent Democrat majorities and permanent Democrat power.
After that, America will drift the same way that all one-party states do. The corruption will be staggering, and no effective opposition will be able to be organized against it.
Watch it all happen if she wins.