I find it hard to imagine a plausible scenario where a complex, blockchain-driven election model is met with trust and comfort by a broad cross section of voters. It practically begs for anti-science paranoia.
Is that rhetorical? I can't think of any major bug on a billion dollar ETH contract. The largest "heists" appear to have ranged in the mid 10's M$ (DAO, Parity), with one bug that freezed a sum in the low 100s M$.
And there are people that don't have a lot of trust in our current voting methods. Can't stop conspiracy theorists really. I think with global warming there is a degree of uncertainty due to the varying environmental factors. This will be something where you can pretty simply explain what's going on, or at least say this part is encrypted with X algorithm and people are happy. The public is willing to trust encryption, specifically there have been cases where the government's efforts were thwarted by strong encryption.