Why are GOP swings more intense than Dem swings

[Gracile]

An underrated factor here is the relative diversity of large urban/inner suburban counties means that you will get a lot of contradictory swings that will cancel each other out to a certain degree. For example, a county with a combination of college-educated white, non-college-educated white, Hispanic, African-American, etc. neighborhoods will have disparate swings and flexibilities.

Compare this to the many rural/small metro counties that have shifted markedly to the GOP, which are comparatively more homogenous and have a collective voter base that is "on the same path," so to speak, means you will see more pronounced swings. So much of this can be explained by the significant gains the GOP made with smaller metro, non-college-educated whites (or in the case of the RGV, small metro Hispanics) and those counties being more demographically uniform.