Because the count is done by representatives of each party together and each of them won't let the others steal for their side. The characteristics of paper el

Because the count is done by representatives of each party together and each of them won't let the others steal for their side. The characteristics of paper elections are well understood and can be shown to be sound very easily to any common citizen. The massive attack surface of electronic elections is poorly understood even by technical people. It's a massive amount of complexity and expense for exactly zero gain.