Illinois Election Laws: Registration, Ballots, and Candidates

Illinois election laws are set out in the Illinois Constitution and the Illinois Election Code (10 ILCS 5), with the State Board of Elections and local election authorities handling day-to-day administration. Together they govern who can vote, how to register, the ways you can cast a ballot, what candidates must do to get on the ballot, how campaign money is raised and reported, and what counts as an election crime. The rules that matter to you depend on whether you are voting, running, or working the polls.

Who Can Vote and How to Register

The state constitution sets the floor for voting: U.S. citizenship, age 18 or older by Election Day, and residence in the election district where you cast your ballot.1Illinois General Assembly. Illinois Constitution – Article III The Election Code adds a 30-day residency requirement in your precinct before the election. People convicted of a felony lose the right to vote while incarcerated and get it back upon release.

You can register online through the State Board of Elections, by mail, or in person at the county clerk’s or election authority’s office. Online registration requires a valid Illinois driver’s license or state ID. In-office and mail registration close 27 days before any regular or special election.2Justia. Illinois Code 10 ILCS 5 Article 4 – Registration of Electors

Since 2018, Illinois has run an automatic voter registration program. When you transact business at a Secretary of State facility or another participating state agency and provide proof of citizenship and age, you are registered unless you opt out.

Grace Period Registration

If you miss the 27-day cutoff, grace period registration keeps the door open. The window runs from the close of regular registration through Election Day itself. You register in person at a designated grace period location or, on Election Day, at your assigned polling place, and you can vote at the same time. The catch: you must bring two forms of ID, and at least one has to show your current address.3City of Bloomington Board of Election Commissioners. Grace Period Registration

Ways to Cast a Ballot

Illinois lets you vote three ways, and none of them requires an excuse.

Election Day

Polls open at 6:00 a.m. and close at 7:00 p.m.4Illinois State Board of Elections. Election Day Information Vote at the polling place assigned to your precinct. If you are in line when the polls close, you are still entitled to vote. Election judges check your name against the register and issue the ballot.5Illinois General Assembly. Illinois Code 10 ILCS 5/17-9 – Name and Residence of Voter; Ballots; Judges of Election

Early Voting

Early voting runs in the weeks leading up to Election Day. You can vote at any early voting location in your election jurisdiction, not just the one nearest your precinct. The main election authority office opens first, and satellite sites tend to open closer to the election. The ballot is the same one you would receive on Election Day.

Vote by Mail

Any registered voter can request a mail-in ballot without giving a reason. You can apply by mail, online through your election authority, or in person. The application window opens 90 days before the election. Mailed applications close five days before, and in-person pickup closes one day before.6Illinois General Assembly. Illinois Code 10 ILCS 5/19-2 – Application for Ballot

If you would rather vote by mail every time, Illinois offers a permanent vote-by-mail program. Sign up once and a ballot arrives for every election automatically. You stay on the list until you ask to be removed, move out of the jurisdiction, or your registration changes.

Do You Need Photo ID to Vote

Illinois does not require photo ID for a voter who is already registered at the current address. You give your name and address to the election judges and receive a ballot. Judges can ask for ID if they have grounds to challenge your right to vote at that location, or if your registration record does not include a driver’s license number, state ID number, or Social Security number. Anyone who registered by mail without providing that information must show ID the first time they vote in person.

Provisional Ballots

When something at the polling place blocks a regular ballot, election judges must offer a provisional ballot. Common triggers:

  • Your name is not on the precinct rolls and you decline to register through the grace period.
  • A judge, poll watcher, or voter challenges your right to vote and a majority of judges sustain the challenge.
  • A court order keeps the polls open past 7:00 p.m. and you vote during the extension.
  • You registered by mail, are required to show ID, and cannot produce it.
  • Records show you already voted early, but you say you did not.
  • You were sent a vote-by-mail ballot and did not return it.
  • You tried to register on Election Day but could not produce the required documentation.

After Election Day, the election authority reviews each provisional ballot to decide whether the voter was eligible. If it checks out, the vote counts.7Illinois General Assembly. Illinois Code 10 ILCS 5/18A-5 – Provisional Ballots

Time Off Work to Vote

Illinois employees are entitled to two hours of paid time off to vote if their scheduled hours do not leave them at least two free hours while the polls are open. Ask before Election Day. Your employer chooses which two hours, but the leave cannot cost you pay or trigger any other penalty.8Illinois General Assembly. Illinois Code 10 ILCS 5/17-15 – Employee Voting Leave A shift that runs 8:00 a.m. to 6:00 p.m., for example, qualifies, because it leaves less than two hours before polls open or after they close.

Getting on the Ballot as a Candidate

Candidates for partisan office must be U.S. citizens and registered voters. Residency requirements vary by office; state legislators, for instance, must live in the district they seek to represent, with durational rules set by the constitution and individual office statutes.

To reach the primary ballot, candidates file nomination papers: a statement of candidacy, a receipt showing they filed a statement of economic interests, and petition sheets signed by registered voters in the district. Signature thresholds depend on the office. For most state, congressional, and county offices, the filing window opens 141 days before the primary and closes 134 days before. Municipal and township candidates file between 127 and 120 days before the primary.9Illinois General Assembly. Illinois Code 10 ILCS 5/7-12 – Filing of Petitions The State Board of Elections reviews each filing for basic compliance.

Write-In Candidates

Write-in votes only count for someone who has filed a Declaration of Intent to be a Write-In Candidate with the election authority. The deadline is 61 days before the election. If a ballot candidate is later removed because an objection to their papers is sustained, a write-in candidate can file as late as seven days before the election.

Campaign Finance

Article 9 of the Election Code covers campaign contributions and spending for candidates, parties, and political action committees.10Illinois General Assembly. Illinois Code 10 ILCS 5/9-10 – Disclosure of Contributions and Expenditures

Contribution Limits

The statutory base limits per election cycle are $5,000 from an individual to a candidate committee, $10,000 from a corporation, labor organization, or association, and $50,000 from a political action committee. The State Board of Elections adjusts these figures for inflation every odd-numbered year using the Consumer Price Index.11Illinois General Assembly. Illinois Code 10 ILCS 5/9-8.5 – Contribution Limits After the January 2025 adjustment, the individual cap is $7,300, the corporate and labor cap is $14,600, and the PAC cap is $72,800 per candidate per election cycle. Political party committees have separate tiers.

Reporting

Every political committee files quarterly reports of contributions, expenditures, and independent expenditures. Reports are due by the 15th of the month after each quarter. A first missed deadline carries a $500 civil penalty, with higher penalties for repeat violations up to $3,000. No single fine can exceed the amount of the contribution involved.10Illinois General Assembly. Illinois Code 10 ILCS 5/9-10 – Disclosure of Contributions and Expenditures

Who Runs the Polling Place

Election judges are officers of the circuit court. They set up the equipment, verify voters against the register, issue ballots, keep order, handle challenges, and manage situations where a voter shows up who was already issued an early or mail ballot.5Illinois General Assembly. Illinois Code 10 ILCS 5/17-9 – Name and Residence of Voter; Ballots; Judges of Election

Poll watchers observe the process. Established political parties, individual candidates, civic organizations, and organized groups for or against a ballot measure can appoint them. A candidate gets two per precinct; most other organizations get one; established political parties get two per precinct at general and consolidated elections. Every poll watcher must be a registered Illinois voter affiliated with the party, candidate, or organization they represent, and must carry credentials issued by the election authority or the State Board of Elections.12Illinois State Board of Elections. Pollwatchers

Election Crimes

Article 29 of the Election Code sets criminal penalties for election-related offenses. Most are felonies.

Class 4 felony fines in Illinois can reach $25,000. A conviction for an election offense can also cost you the right to hold public office.

Redistricting

Illinois redraws legislative and representative district boundaries every ten years after the federal census. The constitution assigns the job to the General Assembly, and the maps must be compact, contiguous, and substantially equal in population.16FindLaw. Illinois Constitution Art IV Section 3 – Legislative Redistricting

If the General Assembly fails to pass a plan by June 30 of the redistricting year, the process moves to a bipartisan Legislative Redistricting Commission of eight members, four from each party. If the commission deadlocks, the Illinois Supreme Court submits two names from different parties to the Secretary of State, who randomly selects a ninth, tiebreaking member. The commission then has until October 5 to approve a plan by at least five members.17Illinois General Assembly. Illinois Code 10 ILCS 91/5 – General Assembly Redistricting Act of 2011 – Findings and Declarations

Federal law adds another layer. District maps must comply with the Voting Rights Act, which prohibits boundaries that dilute the voting power of racial or ethnic minorities. Legal challenges to Illinois redistricting plans go straight to the Illinois Supreme Court, which has original and exclusive jurisdiction over them.