She could barely fulfill campaign obligations on a scale of 1 or 2 a week.
She may not have the media campaigning for her again.
Even many Dems would likely revolt against another run by her.
And she will have aged even more.
By 2020 she will be tan, rested, and ready!!
She was running on empty near the end of the campaign. She doesn’t have the stamina or endurance to make it through two more years of a grueling campaign. And the Dems will never forgive her for losing to Trump.