District Instance
list: Return all districts, which can filter ballot items.
retrieve: Return a specific district, which can filter ballot items.
GET /api/districts/10244/?format=api
http://michiganelections.io/api/districts/10244/?format=api", "id": 10244, "category": "Intermediate School District", "name": "Newaygo County Regional Educational Service Agency" }{ "url": "