I don't think so - if the Republicans nominate someone like Ryan or Haley, Clinton could lose. Especially if there's a recession before 2020 (and there very well may be).
Agreed,
If d a recession happens combined foreign policy problems and the inevitable Clinton corruption occur on her watch then it's very possible she'll lose.
Besides we are way overdue for a 1 termer anyways. Hillary also wouldn't be winning this year if the GOP had actually nominated a coherent sane candidate anyways.
Then again in 2020 if she faces someone in the mold of CHUMP or Cruz she'll prob win again.
Or the next recession hits
after she wins her second term (2021 or 2022), paving the way for a Republican to take back the White House in 2024.
That guess is as good as yours, though a mite bit inconvenient for those of you who would prefer to see Hillary one-termed.