Now I hear that Zuckerberg is entertaining a run for President in either 2020 or 2024. Seems as if Donald Trump winning the presidency has given several other Billionaires, and TV personalities (as in Dwayne Johnson, the Rock) the idea to run for President. Who knows where it will end, even Hillary has rehired some of her old campaign people and given the resentment against Donald Trump there is no telling how many liberals will be coming out of the woodwork to run against him in 2020.
One thing about the last election was that it was not only rigged for Hillary Clinton but every opponent she had in the race refused to attack her on the so many vulnerabilities that she certainly had. I dare say that this won't happen in 2020 if she decides to run again. I dare say the gloves will be off and EVERYTHING from Benghazi decisions to losing to Trump will be on the board and used against her.
If, though, Trump succeeds and continues to have jobs created, immigration down, and confidence reinvigorated then there may not be anyone that can defeat Trump except Trump. The Democrats will surely use the Republicans failure to reject Obamacare as an issue but if they do I'm pretty sure that the Republicans will turn it around on them and highlight how not one Democrat voted to repeal Obamacare and that if they had it might have happened. As with many things Time will Tell.