I think I see what you're saying, but couldn't you make the same case you made for the jury (technically a part of politics) for a political process (I'm assuming you mean an election)?
I was thinking of the electoral process, yes. It would take a lot of effort to test the whole democratic process. I like to distil arguments into simpler contexts to make sure they work :)
That's why reposted to reword. I tried to go simpler. Thanks for the discussion. My original note wasn't particular to the electoral process.