Tell me, don't you feel bad when you use a few rotten apples to demonize a whole party, with some well-thought and reasonable core ideologies? I wouldn't have a problem using the candidates for that, but most of them are hand-picked by the establishment. Don't take the worst of a group and extrapolate to a whole electorate. Yeah, most of them are very vocal and influential, but they are still minorities. Most people that vote for the GOP are not necessarily radical and retrograde social conservatives... they just don't have any option. Where are little government, anti-tax, fiscal conservatives, libertarians and strictly moderate democrats going to vote? If America was a standard European country, there would be options. Third parties... sixth parties. But there isn't, due to this politics duopoly. But not everyone in under the big tent boos at the same thing those idiots booed to.
I think that candidates like Paul or Johnson are injecting the GOP with a lot of new blood, especially one that can be active enough to substitute the traditional, caricatured base.