Trump is a part of it but it's also due to the inland migration by coastal folks in search of cheaper housing. That + younger voters is why Dems have consistently increased their margins in places like Fresno & the Inland Empire since 2008.
I'm also seeing regional stories of how Bakersfield is seeing a big growth in young people & coastal folks from LA. As well, a lot of stay-at-home Bay Area workers have been resettling around Lake Tahoe since the lockdowns. I wouldn't be surprised if one or all of Kern, Placer & El Dorado Counties end up flipping by 2032.
What amazed me was the strong swing to the left in the Sacramento suburbs in Sacramento and Placer Counties. Roseville, Rocklin, Folsom have swung so hard to the left.