Jefferson would mostly be blue. The emerald triangle is left/libertarian and a lot of boomers there have no access to Fox News and are still salty about the time Regan landed a helicopter on their ranch to shoot up their weed crop. Jefferson only sounds red because only crazy right wingers with hybrid Confederate/Jamaican flags on their trucks support the idea. The reality is they would still need to live and vote with their neighbors who drive Subarus.
I don't know how true that is. It's hard to say which counties "would be" in that state since it will never exist, and some of the counties which its supporters say would be included have already affirmatively rejected the idea, such as Lake County. But as for the supposed California counties, the Trumpy ones like Shasta went 2:1 for Trump in 2020 while the large "blue" ones like Butte went 50/50. The ludicrously empty ones like Modoc were 3:1 Trump in 2020.
Jefferson will never ever happen because there's no mechanism for it to happen, and because it would be by far the poorest state with the absolute worst economy in the nation, so I'm not even sure why we should discuss it.
Oh and by the way the Jefferson plan specifically excludes the Emerald Triangle.
