brazilians have been sold e-voting with the promise of fast results and a mythical trustworthiness of the opaque "voting machines".
(me, I'd prefer voting humans over voting machines, but I digress :-)
we've had legal requirements for printers attached to the voting machines, for voter verification and independent counting, but a myth was created that this would break voting secrecy, and that printers are so unreliable that we can't count on them, so the possibility of independent counting was progressively removed from the system.
part of the problem is that voting authorities and their technical advisors might even be correct that the system is not vulnerable to external or even internal attacks, but that is not quite the same as having a system that every voter and party can verify fully and independently, to the point of being able to trust the results regardless of who's running the elections, which leads to this very dangerous and painful flank of attack on democracy.
sucks to be a brazilian aware of technological limitations to e-voting, it's hard not to be mistaken for a flat-earther these days :-(