Well, that article is 2 years old. And, yes, there is a high percentage of new residents from CA. But, they don't appear to be Obama-worshiping liberals.
From your link:
That's reflected by the subject study of this article:From a political standpoint, Idaho?s ?ex-Cals? are ?actually very similar to the natives here,? Moncrief said. They?re not changing the political landscape much. Like most Idahoans, they tend to be conservative. In some cases, they?re more conservative than Idahoans.
A 2013 article in High Country News, ?How right-wing emigrants conquered North Idaho,? noted how newcomers, mostly from Southern California, transformed North Idaho from politically moderate to strongly conservative.
https://www.idahostatesman.com/enter...224536105.html
It's also not showing up in voter registrations. At least not in alarming numbers. And it sure as hell isn't reflected in the election outcomes. It appears that some, maybe even a majority of, Californians moving here are registering as Rs.