API and data model

The application models the Civic Information response with explicit TypeScript interfaces:

• Election identifies the election name and election day.
• PollingLocation describes an available polling or drop-off location and hours.
• Candidate and Contest describe contest choices and referendum text.
• VoterInfoResponse combines election, contests, locations, and administration links.

The API helpers keep network access separate from route rendering and surface failed HTTP responses as useful errors.