That's just it, there are different voting processes all over the country. There is no centralized anything. Voting machines are manufactured by for profit corporations. I have to scoot, but we can expand on this latter, there is a lot there. If Voting Machines Were Hacked, Would Anyone Know? http://www.npr.org/2017/06/14/532824432/if-voting-machines-were-hacked-would-anyone-know