Doubts that a centrist Republican can defeat Democrats
With the failure of centrist like John McCain and Mitt Romney there is a feeling among many conservatives that nominating another centrist will be another path to defeat. Cruz has certainly been one of the main messengers of this belief. In fairness, I think Romney was a victim of Democrat and IRS voter suppression in 2012. The IRS abuse was aimed directly at conservative activist and financial supporters. Still the less conservative candidates have a steep climb to persuade conservatives that they can win. There best bet would be to target the IRS voter suppression effort.