Will Hunting the most objective, active, insider Democrat on this message board who actually knows the politicians and is in a way a (D) internal but fair, has said the same exact thing
just look at 2022 compared to 2020, the margin was under 20% and a lot of the localized races went (R)... there's a large chunk of the population, largely suburbanites and working class Latinos, that are pissed with the Newsom administration and various cost of living increases through the roof, lifestyle decreases, overall societal decay in CA that's happened in the past decade-plus... the fact that they can't write off their 11-13.3% state income tax anymore since 2018 isn't going to be what they vote on tbh. It's much more of an issue in, say, the suburban Minnesota twin cities, though (D) state government including the VP nominee himself could also lower the tax burden there too tbh.
I don't think it's a zero percent chance Trump wins election and loses popular vote. 2022 was a decent example of how it could happen. Not saying midterms are everything, but that's essentially what 2022 equated to on the federal level.