Why do minority communities tend to swing towards incumbents?

[Sol]

I don't know if necessarily a "swing to incumbents" is the best explanation for why some of these communities voted the way they did, and in some cases there clearly wasn't a swing to incumbents--Trump clearly did worse with Natives in 2020 than in 2016, for example.

Romney alienated a lot of immigrant and Latino communities with rhetoric around self-deportation, so it shouldn't be surprising that did poorly in those areas.