Conservatism aside (and in the Bush family, it certainly seems to be) the biggest thing that makes Jeb non-viable is his surname.
Baraq has performed the most complete smear of his predecessor in the history of the Presidency, thanks to a sycophantic media. Jeb Bush could be Reagan/Cruz squared and he’d never have a chance in a national election. The LIVs would just see his last name.
Of course, in reality, conservatives see his last name too and simply say ‘no’.
"Conservatism aside (and in the Bush family, it certainly seems to be) the biggest thing that makes Jeb non-viable is his surname."
I can just see the Dems slogan in 2016: "Clinton was the last of the president during '90's-era Prosperity'... Bush was the last name of the president who made you lose your job and your 401(k)"...