One problem is that the Republican establishment is also a collection of big-gov statists, too. Many R. candidates lack the courage of their conservative convictions, all too many lack the convictions.
The 1st thing we need is a party that stipulates Reagan's tenet that big government is the problem. We need to hear "less government lower taxes", not "we'll run big government better & $pend what we confiscate more wisely." Government is supposed to be a referee & protector for a people basically free to pursue happiness, not big sugar daddy, big nanny, & decider of who gets what. Those who buy in to the latter, will 1 day discover their betters can decide that they don't actually need anything, even life (cf. the IPAB)