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
and even among people in those states, it all falls down to a few million at best credulous dipshits who could go either way. Most people will vote one way and will not flip no matter what
It’s really more about the people who will either vote for you or not vote and getting them to actually vote. “Swing voters” are like 6 guys, 5 of who are in solidly red states where it won’t matter anyway.