Sort of like Cain?
Cain has a record of achievement in a difficult field (mathematics) and has had leadership positions in business and finance.
Rubio, as far as I know, has nothing like that.
But, I'm not from Florida, and there's probably stuff about Rubio I don't know.
What I DO know is that he's been a Senator for less than two years and he can talk to the landscaper and the pool boy without an interpreter.
Please fill me in on the rest.