No, we can't. The attack scenarios for all of the above are nothing like elections. Elections have to protect both against unauthorized voting (so every person has only one vote) and against determining how anyone voted, including by those running the election (so people can not sell votes/be pressured into voting a certain way).

And not only do these properties have to be guaranteed, it is also an absolute must that the vast majority of citizens can verify that that is the case, both because of the amount of power that is controlled by elections (the entire taxes of a country, control of the military, ...), so there is a significant risk that someone could be able to corrupt any group of experts that isn't a significant proportion of the population, but also for rasons of political stability: Even if the election system is in fact counting correctly, it's a major political risk if people suspect that things are rigged and have no way to really find out.