“Rounding this figure to 30 percent, then extrapolating it across the U.S., Miller concluded that in 25 states the independence campaign would win a hypothetical independence referendum. An analysis by Newsweek found that there were 23 states in which you could produce a majority for independence if you added 30 percent to the figure supporting independence in the initial YouGov poll.”
https://www.newsweek.com/us-breaking-apart-half-ready-leave-texas-secessionist-1887864