How about all the way down to the individual ? Why not have everybody choose what TYPE of government they favor — Conservative or Liberal. Your ID would tell which group you belong to. Each group decides what laws to make, and what government programs to participate in. You vote on issues within your group, and pay taxes within your group to pay for the government you want.
So Conservatives would pay taxes to fund national defense and judiciary and infrastructure, but pay for no welfare or public school and are not eligible for benefits in those programs. Conservatives cannot be sued for refusing service to anyone for any reason, like baking a cake because they are gay. Liberals can pay the costs to incarcerate murderers and rapists and child molesters for life, while Conservative will pay $1 for a bullet to the brain.
why pay a dollar per bullet; wire rope is fairly cheap and you can use it over and over.