Except the most important metric of all. Equal numbers of poll watchers from both major and minor parties. Already one state faces an UNLAWFUL election in the primary for that reason.
If you try to expose election fraud something very bad will happen to you.
. much safer to just be a "poll watcher", have some coffee and donuts and a few laughs, let the wool get pulled over your eyes and continue to believe how great and fair US elections are