I sincerely hope I'm DEAD WRONG about this but...
All but Cruz and Rand are establishment candidates and they normally flow to to the establishment candidate ('Front Runner')
Rand Paul may poll as high as 46% in fair fight, but Jeb Bush has deep pockets, name recognition and huge political and banking ties..
** Advantage Jeb Bush
*** Only if the controlled media doesn't impose a 'BlackOut' on Rand Paul and he is allowed a good share of TV debate time, will we see a real constitutional conservative in the White House..