Yikes!
Well I almost made it through, but please consider your math.....its off. there are not 8 million ex JW's alive and certainly not within voting age. Even if there were lets say 500K, they would be spread all over the world, have varying degrees of sympathy for the org or the ability to do what you suggest, and be of varying ages.
But way to think big. Maybe instead of that, just make a thoughtful sign, and go to the regional convention nearby and smile and hand out JW facts tracts.