Rubio’s job is to try to suck the air out of the other conservative candidates for the GOPe.
If the GOPe's preferred, Jeb, gets the nomination, Marco can't be the VP. So, he may be promised some other high position.
The same might be said for Huckabee, because I think he is now a resident of Florida.
Both Rubio and Huckabee have a purpose -- to try to split up the conservatives.
Thats an easy fix: Bush changes his place of residency to Walkers Point and picks up a Maine drivers licence.
GW Bush and Cheney were both residents of Texas in 2000. Before accepting the nomination Cheney changed his residency to Wyoming.