The results of the 2020 US election are coming into focus, and, broadly speaking, there remains a large gap between how racial/linguistic groups vote. The Republicans were accused of running a distinctly racist white-identitarian campaign,* and again attracted a lot of support from white working class and rural voters, and retained an overall advantage among white voters. On the other hand, Latinx and, especially, black voters heavily supported Democrats. There were some localized shifts, with, notably, many Latinx voters shifting towards the Republicans in South Florida and South Texas.
The S. Florida shift is fairly easy to account for, as the largely Cuban-American Latinx community there is skeptical of left-wing politics due to concerns about left-wing regimes in Latin America. Also, reporting before the election flagged a large amount of misinformation about Joe Biden and the Democrats as circulating in S. Florida for whatever reason (‘This is f---ing crazy’: Florida Latinos swamped by wild conspiracy theories //A flood of disinformation and deceptive claims is damaging Joe Biden in the nation’s biggest swing state.).
The S. Texas shift is more surprising, at least to me, and doesn't particularly seem to have carried over to other largely Mexican-American areas of Arizona or California. So what accounts for this shift?
*Response to some comments about this language: That the Republican Party under Trump has run racist campaigns is the mainstream judgement of the field of political science and of reputable media outlets, as those added links may indicate. The point of mentioning this is not to "soapbox" but to indicate a reason that a shift towards the GOP within a minority group is at least somewhat surprising or interesting.