That is the $64K question. Trump does not need Cruz. Cruz should take Mcaconnell position in Senate. Can do more good there. Carson, Palin in cabinet. Firina sent home and forgotten. Who as VP might help and be seen as potential President? Cruz, yes, but again, he does not add to the ticket, which is shown in polling. Definitely NOT Walker or any of the other candidates. Need someone seriously credible.
the VP position is the line to the white house. it puts cruz in position to be president, which is what we need, after trump comes in and kicks ass and cleans house. then cruz comes in and finishes righting the ship after trump throws the pirates overboard.