You mean a populist ‘bloc’ it certainly seems at least a little possible.
We will need a Republican who can connect with working-class and blue-collar folks. Unfortunately, other than Palin and perhaps Scott Walker, that Republican doesn't exist.
The Democrats in 2016 are going to talk about jobs, manufacturing, keeping America safe, and protecting the little man against the mean-old big business. Amnesty, global warming, gun control are going to be non-existent in 2016.