Here is a pivotal article by Jenny Cohn from 2012 that lays out how the "fraction magic" system was developed.

States have used taxpayer money to buy systems from vendors with close past and/or present ties to a foreign dictator, US politicians, a Religious Right group, and a convicted embezzler whose crimes involved computer tampering

January 28, 2018

https://medium.com/@jennycohn1/updated-attachment-states-have-bought-voting-machines-from-vendors-controlled-and-funded-by-nation-6597e4dd3e70

Although the author is no conservative, there is still a ton of useful info here. Here are the caps to all 68 points she makes.