@roger,
Poor Nancy. The Republicans hate her, the Bernie Democrats hate her. She always seemed okay to me, frankly.
Oops, she's 77. Too old. She'll be okay until 2020, but she should not run for re-election. Most people, even quite sharp ones, admit that there is a little bit of a falloff after the early 70s. You're not quite at your peak. The presidency requires someone at the very peak of their mental powers.