If MAGA wanes, could the Tea Party make a comeback? Or is the latter squarely an Obama era opposition movement. I just don’t know how Ted Cruz, Scott Walker, Marco Rubio (well he’s been rebranding himself as more of a Catholic common good type), and others of their ilk will call themselves. There will still be plenty of small government types in the GOP who don’t care about protectionism and leave immigration as a secondary concern.
The Senate GOP seems to think we are on the verge of a Tea Party comeback, but I don't necessarily think so at this point.
Even if there is a populist wave or discontent, I don't think it is going to be exactly like the Tea Party and will almost certainly contain a much more populist element.