Madison County, Idaho
Voting in Madison County, Idaho? Find registration links, ID rules, early and absentee voting options and your sample ballot here. Home to about 55,500 people, Madison County ranks 7th in population among Idaho's 44 counties. In Idaho, the county clerk handles voter registration, absentee ballots and polling places.
Next Election
May 16, 2028
Voter Portal
Register Online
What's On My Ballot?
ID Requirements
Absentee / Early Voting
Registration Deadline
Register online or by mail before the pre-registration deadline for each election; Election Day registration is available in person with ID and proof of residence.
Why Voting Matters
Voting is how Madison County residents shape the decisions made in their name. The next election for Madison County voters is Idaho's primary election on May 16, 2028; local elections can come sooner, so check your local election office. Local work in education and health care means debates over schools directly affect Madison County families.
In the 2024 presidential election, about 17,400 ballots were cast in Madison County, about the same as the 17,100 cast in 2020. With roughly 40,400 adults living in the county, that is around 43% of adult residents, below the statewide rate of about 59%.
Put another way, about 23,100 adults in Madison County sat that election out. Not all of them can vote, but if even 5% of them did, that would be roughly 1,150 more ballots, often more than the margin in races for local councils, school boards, the legislature or Congress.
Madison County spans about 469 square miles of small towns and countryside, averaging roughly 118 people per square mile. The county is home to about 2.8% of Idaho's population.
ZIP codes in or partly in Madison County include 83422, 83434, 83436, 83440, 83441, 83445, 83448 and 83451, plus 2 more. Take two minutes to confirm your registration, preview your ballot with the links on this page, and decide when and how you will vote. Bring a neighbor along.
Voter Assistance Resources
Who runs elections in Madison County? In Idaho, the county clerk handles voter registration, absentee ballots and polling places. For registration, polling places, early voting and absentee ballots, contact the Madison County clerk.
Statewide directory, VoteIdaho's Find Your County Clerk page:
https://voteidaho.gov/county-clerk/
See your sample ballot. VoteIdaho's What's On the Ballot page:
https://voteidaho.gov/on-the-ballots/
You can also preview a personalized ballot at Vote411.org.
Free, nonpartisan help is available before and on every Election Day: call or text the Election Protection hotline at 866-OUR-VOTE (866-687-8683). Spanish: 888-VE-Y-VOTA (888-839-8682). Asian languages: 888-API-VOTE (888-274-8683).
Voters with disabilities in Madison County can ask for an accessible voting machine, curbside voting where offered, and help from a person of their choice. If you run into barriers, contact Disability Rights Idaho, Idaho's Protection and Advocacy agency, at (208) 336-5353. VoteRiders (844-338-8743) offers free help with voter ID.
Need a ride? Many local transit agencies and ride services offer free or discounted rides to the polls on Election Day, so check what is available before the next election. See our Idaho voter page for statewide options. Details can change, so confirm with the official election office.
Military and overseas voters can get help from the Federal Voting Assistance Program at 1-800-438-VOTE (8683) or fvap.gov.
Sign up to be an election worker
Election workers (often called poll workers) keep voting running smoothly in Madison County. Most are paid for their time, get free training, and help their neighbors cast their ballots. You can work a full day, a shorter shift, or help before Election Day. County and municipal election offices recruit and train their own workers, and the EAC's Help America Vote page links to yours. Find out how to sign up:
https://www.eac.gov/help-america-vote
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