I take it youre not a fan of Republicans? Rubio does seem like hed have the ability to appeal to people who dont normally vote Republican. I think conservatives get do caught up on ideology that they often forget its important for people to like you first. Makes it easier to sell your ideas.
The bottom line is, if you don't have the money, you don't stand a chance. Both republican and democratic nominees spend one billion dollars each on the campaign trail. If he can get that kind of funding, he can forget about it. Money wins elections. The issues come in second place.