In essence one sends anyone qualified (e.g., properly registered) to
vote one zero-value bitcoin (doesn't have to be bitcoin, but
analogous) which they must return ("spend") with their vote
submission.
I do like that basic idea. (I have also done thought experiments
with blockchain technology to do things like represent ownership of
a thing - whether that thing be real property or a bicycle or a
domain name. The singularity property is so very useful for things
beyond its use as a form of money.)