The local talk show hosts (3 from WISN radio) are pretty good at vetting people (Vicki McKenna in particular) and they seem quite happy with Priebus. I will give him this - he was Steele’s campaign manager last time he ran for Chairman of the RNC, so it took some guts for Priebus to challenge him this time.
Remember last year there was some article, maybe on Hot Air, talking about how most of talk radio and otherwise conservative pundits were rooting for the establishment candidates in the primaries? McKenna and the others in WI were all onboard with the establishment. We're such a small state where republicans are concerned, the local radio folks had to protect their interests and support the establishment picks. That's why you never heard the primary challengers on talk radio shows.