This is based on 43 states being considered "non-negotiable" and "set in stone" while only 7 are considered "swing" states
Also consider I specified "voters", who are at best only 2/3 of the total population, which leaves out about 100 million extra people
It's even lower than that because those 43 states include the most populated states in the country.
PA, GA, and NC are large states with a healthy population, but otherwise yeah