Earlier quoted context omitted.
I note in this context that threatening to lock up either Hillary or Trump are not helpful. Say that in 2020, Trump loses the election, and feels that if he leaves office, his political enemies will find a way to imprison him. He therefore has very strong incentive to find a way to stay in power. That really might not be what you want...
I doubt it. Jailing Trump would be counterproductive. Taking such an extreme step would be destabilizing and make it more difficult to bury the whole affair of the Trump presidency. Would you really want a slow drip of Wikileaks about how compromised a US President was going public? If I were a victorious president-elect, I would offer to pardon him with the condition that he STFU, and appoint a special counsel to in…
And there's an especially strong motive for state-level actors in blue states to prosecute - it's a massive political boost with the electorate there, it'll score a lot of points.