One purpose for registration is to lock the person into voting in a particular district. Why? Ballots can and do vary by district. Different districts have di

One purpose for registration is to lock the person into voting in a particular district. Why? Ballots can and do vary by district. Different districts have different representatives (on both state, county and town/city level) Different districts have votes for different issues (state amendments, county amendments, town/city amendments) Different districts have different local offices (county officers vs city/town officers) Registering also locks a person into voting only once.