Here in texas. >> i'm going to walk through the checks and balances again. >> reporter: hayes list county elections said with widespread hacking would never succeed. >> if you even change a period, a period in the election programming, it sends up a red flag that immediately stops the entire process into we can identify what would have triggered that red flag. >> reporter: in harris county alone, they suspect thousands of voting machines. >> six months out we start checking all 13,000 pieces of equipment in harris county, opening them up, do they turn on, have they been tampered with, are all ...