This is something I've been wondering about lately. Rubio is charismatic, young, conservative, and seems to have come along right when the GOP needs him. On the other hand, his resume is even shorter than Obama's was in '06ish. Rubio's also more conservative than any recent Republican president (any Republican president ever?).
Possibly more important than any of that, though, is that he's Floridan and Hispanic. Is that enough to make him the (extremely) early presumptive nominee? Or is he Paul Ryan's VP? Are either of them even involved?
I don't vote with either party, but the Republicans' actions have me scared lately, and I don't really want to see them in the White House. So Rubio's charisma and youth, so reminiscent of Obama, worry me a bit.