Now Marco Rubio has been strenuously denying for weeks that he would be Mitt Romney's running mate if asked. So of course we shouldn't read anything at all into this:
"3, 4, 5, 6, 7 years from now if I do a good job as Vice President...I'm sorry. As a Senator. If I do a good job as a Senator, instead of a Vice President, I'll have a chance to do all sorts of things."