Simple there are no moderate Republicans only right-wing and extreme right-wing ones! The "moderates" are just good at hiding their true selves tbh.
What's the difference between right-wing and extreme right-wing?
The extreme right-wing can be seen in the Tea Party like politicians that want to take America back to the 1500's with their extreme religious bigotry and laiz-faire like economic policies.
While the right-wing of the GOP wants to maintain the unchecked capitalism we have right now and that led t the 2008 meltdown.
The GOP as well as the Democrats o a lesser extent are the enemies of the worker due to their neo-liberal stances. More so then right-wing opposition's in other countries