I disagree, Rubio is a prime example of what the Republican party believes today. The conservatives who stuck to their principles instead of following the party's slide to the left are now Republicans in name only.
Why do you think a balanced budget, cuts to socialist programs, increased illegal immigration enforcement, and civil rights bills like national reciprocity and hearing act protection didn't pass when the Republican party held the Presidency and the majority in the House and Senate? It's simple. It's because those roll-backs are not desired by the progressive-lite party.