Incredibly interesting chart. Walker, Cruz, Paul are all just slightly right OF THE CENTER of the Republican bell curve, while trump/Cristie/Bush are on the left fringe.
Dem politicians cover their entire spectrum.
Republican nomination may well go to the most conservative because there are slim pickings to the left of bell center.
Looking forward to the general election I would theorize that the only three with a chance to beat Hillary are Cruz, Trump and maybe Perry. The rest will go down to Hillary in a general election.