It's not the tribes people are questioning here, but the categorization of traditional conservatives as a "wing" and traditional liberals as "exhausted majority

It's not the tribes people are questioning here, but the categorization of traditional conservatives as a "wing" and traditional liberals as "exhausted majority". Looking at a few more of their charts, I think I can see the case for it. On social issues, the gap between traditional conservatives and moderates is large, and the gap between traditional conservatives and devoted conservatives is quite small. On the other hand, the gap between traditional conservatives and moderates is large, while the gap between traditional liberals and passive liberals is much smaller.