> Your political party affiliations AND the fact on whether you voted is already public knowledge in our current electoral system

Neither of these are how you actual voted so they don't really matter.

That said, as a non-american, the party affiliation thing is super weird.

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> If you give someone your block ID that says how you voted, then yeah ok - but you can do that today by taking a picture of your ballot.

And in many countries this would be a crime and have legal consequences.