The Republican Party is divided into three factions: The Religious Right, the Tea Party Right, and the Corporatist Right. There’s lots of crossover based on shared beliefs that they are the only true and truly deserving Americans, the real owners of the place, that there are privileges that come with ownership, and that there’s a great mob of Others, a Them, trying to take the country from them and deny them their privileges.. Lance Mannion identifying the Grand Unifying Principle of modern-day Republicanism.
The corporatists just define Them a little more broadly.
By Them, the Religious Right and the Tea Party Right mean those who don’t look like “us”, who don’t talk like “us”, who don’t believe exactly what “we” believe. The corporatists mean everybody who isn’t rich, which includes most members of the Religious Right and the Tea Party Right who haven’t caught on that many of their fellow Republicans regard them as Them.