It's worth noting that this study focuses on two Danish parties. It's honestly not clear that the magnitude of these shifts is consistent — see, for example, ht

It's worth noting that this study focuses on two Danish parties. It's honestly not clear that the magnitude of these shifts is consistent — see, for example, https://www.reddit.com/r/politics/comments/797kzj/comment/dozt0rp?context=3 https://www.reddit.com/r/politics/comments/797kzj/comment/do..., which convincingly argues that the American parties have different willingnesses to shift in order to follow party orthodox.