Not to put too fine a point on it, but this is the most unqualified group of candidates put forth in my lifetime, and not because they are Republicans (although that doesn't help). It's like they took bits and pieces of Mitt Romney and Barack Obama and tried to run on just that. Freshman Senators (x3), Rich (Trump, Fiorina), "business leader" (Trump, Fiorina - and Carson tries to claim that too), marginal governor (Walker, Huckabee, Perry, Bush, Jindal, Pataki). Oh, and the perennial "also ran" (Perry, Huckabee, Santorum). The only "qualified" candidate, really, is Kasich (national legislator and executive), and we can see how popular he is.
On the Dem side, Clinton qualifies, as, like Kasich, having been a multi-term legislator and executive. Bernie Sanders, though I love him, has no executive experience, nor does Murphy. Biden, should he run, checks all the blocks, too. At least the Dems have "serious" candidates.