My guess is the surge in Bush is a direct result of fear of Trump. The majority of Republicans are not Freepers and they want to win above all else.
RINO (aka Establishment/Globalist) are no different than Democrats.
The Republicans control both houses thanks to the last election. Boehner and McConnel have been way more effecting passing the Obama agenda than Pelosi and Reid.
So there is no point in voting for a RINO like Jen Bush.
The only conservatives/Anti Establishment/Anti Globalist are
1) Cruz
2) Trump
3) Paul
All the rest are frauds.