Who would be the worst candidates that the two major parties can nominate?

[Suburbia]

We hear about how certain presidential contenders (Cruz, Santorum, Biden, etc,) are unelectable, bland, etc, but in your honest opinion, which potential candidates would be the worst that the two major parties can nominate for president in 2016?

[Suburbia]

Cuomo: what's the point of going centrist if you can't appeal to independents outside New York?
Cruz: Not the worst option electorally, believe or not (Palin is), but it would take the GOP in a dangerous direction. I would rather have a GOP that's reasonable but competitive than a GOP that would blow everything up upon the slightest touch of power federally.
Palin, Cain, Carson: Would self-destruct spectacularly. Sadly it would happen in the primary and not the general if they ran.

That's true. I think Cuomo may be too corrupt to win.