Yes, I do not mean to say that hacking an election is impossible, or that it's never happened. My only point, which is quite narrow, is that it would be difficu

Yes, I do not mean to say that hacking an election is impossible, or that it's never happened. My only point, which is quite narrow, is that it would be difficult to hack a US presidential election by means of literally hacking voting machines. I do not know the Brazilian election system, but I believe it would be quite difficult to steal a US election in this way.