Petitions
12 Mistakes That Knock Illinois Candidates Off the Ballot
Most Illinois candidates who lose their place on the ballot do not lose it to an opponent's better argument. They lose it to paperwork: a heading filled in after people signed, sheets held together with a paper clip, a circulator statement nobody took to a notary, or a stack of signatures that was exactly the minimum. Each of these mistakes is written into the Election Code or the State Board of Elections' 2027 Candidate's Guide, and each can be avoided with a little planning.
Below are 12 that do the most damage, with the rule behind each one and what to do instead. They apply to both 2027 tracks: filing runs October 19 to 26, 2026 for the February 23 elections and November 16 to 23, 2026 for the April 6 elections. For signature numbers by office and the full process, start with our guide to Illinois nominating petitions. And because the Guide itself says it is not legal advice, confirm anything specific to your race with your election authority.
1. Filling in the heading after people have signed
The heading at the top of every petition sheet names the election, the candidate, the office, the party when there is one, and the candidate's residence. The Candidate's Guide says it must be filled in before the sheet is circulated and must be the same on every sheet (Guide p. 19; 10 ILCS 5/10-4).
The mistake usually happens innocently. A volunteer grabs a blank form at a meeting, collects a few signatures, and plans to fill in the top later. Those signatures were given on a sheet that did not yet say what they were for. Fix it at the source: complete the heading on every sheet before it leaves your hands, and only hand out sheets that are already filled in.
2. Letting your name drift between documents
Your name must appear exactly the same way on your petition sheets, your Statement of Candidacy and, if you file one, your Loyalty Oath. The Guide warns that a mismatch "can result in the candidate not being certified" (Guide pp. 19 to 20). Titles, degrees and political slogans do not belong in the ballot name at all (Guide p. 20).
Decide on the exact form of your name, including any middle initial or nickname, before you print a single sheet. Write it down and use it everywhere.
3. Filing photocopies
Petition sheets must be originals, not "photocopies or duplicates" (Guide p. 19; 10 ILCS 5/10-4). You may copy blank forms before circulating, but every signer's signature, the circulator's signature and the notary's signature must be original ink on the sheet you file (Guide p. 21).
Keep a full set of copies for your own records, by all means. Just make sure the stack you hand to the filing office is the originals.
4. Fastening sheets with a paper clip or binder clip
Sheets must be "neatly fastened together in book form at one edge in a secure and suitable manner," and the Guide specifically says paper clips and clipboards are not secure ways to fasten petitions (Guide p. 19). The statute also forbids pasting sheets end to end into a strip or roll (10 ILCS 5/10-4).
Staple or bind along one edge so the packet opens like a book. If you are not sure what your filing office accepts, ask before filing week, not at the counter.
5. Numbering the sheets out of order, or not at all
Sheets must be "all one uniform size, and numbered consecutively, beginning with the top petition signature sheet as the number '1'" (Guide p. 19). Mixed paper sizes, skipped numbers or a stack with no numbers invites a challenge and makes your own count harder to defend.
Number the final stack once, after you have pulled anything you are not filing, and check the sequence before you fasten it.
6. Two people circulating the same sheet
The circulator statement at the bottom of each sheet is a sworn statement that every signature on it was signed in that person's presence. The Guide is direct: "The circulator must personally witness all signatures given," and "No one may be considered a circulator of any petition page except the person who signs the circulator's statement" (Guide p. 21). A sheet cannot be circulated by more than one person (Guide p. 67).
The common version of this mistake is a sheet left on a counter at a coffee shop or passed around a meeting room. If the circulator did not watch each person sign, that sheet is at risk. One sheet, one circulator, present for every line.
7. Skipping the notary, or saving it for filing week
Every circulator statement must be sworn to before a notary (Guide p. 21; 10 ILCS 5/10-4). The statement also has to give the dates the sheet was circulated, the first and last dates, or a certification that no signature was gathered more than 90 days before the last filing day (Guide p. 21).
A missing notarization can put every signature on that sheet in doubt, which makes it one of the most expensive mistakes on this list. Notarize completed sheets weekly. Note that State Board staff will not notarize during filing periods (Guide, preface), so do not plan to find a notary at the counter. ISBE also suggests that a cautious candidate avoid using a petition signer as the notary (Guide p. 67).
8. Circulating too early
Sheets "must not be circulated more than 90 days preceding the last day for the filing of the petitions" (Guide p. 21; 10 ILCS 5/7-10, 10-4). For 2027 that is why circulation began July 28, 2026 on the February track and August 25, 2026 on the April track. A signature gathered before the window opened does not count.
This one tends to catch candidates who started early with enthusiasm, or who reuse sheets from an earlier drive. Start fresh sheets on or after your track's opening date.
9. Letting someone sign for a spouse or family member
"A signer must sign their own signature on the petition, meaning they cannot sign for someone else, such as a spouse, family members, or other persons in the household" (Guide p. 21). Party primary petitions are signed by voters "in their own proper persons only" (10 ILCS 5/7-10).
At the door, this is a kind offer that is hard to refuse: "My husband's not home, but he'll sign too, I'll put him down." Thank them and come back for the second signature. Forging a signer's name is forgery under the statute (10 ILCS 5/10-4), and a line that looks like a family member signed it draws attention from any objector.
10. Collecting signatures from people who cannot sign for your office
A signer must be a registered voter in the political subdivision where you are running, at the address shown next to their signature (Guide pp. 21 to 22). On a party primary petition, a voter may not sign for candidates of more than one party in the same primary (10 ILCS 5/7-10). For nonpartisan and independent races, the number of seats being elected is the number of petitions a voter can sign for that office (Guide p. 21), and for independents, "each voter may subscribe to one nomination for such office to be filled, and no more" (10 ILCS 5/10-3).
Out-of-district signers are the biggest source of loss, and they come mostly from busy public places. Circulating door to door, from a list of registered voters at addresses inside your district, keeps nearly every line eligible. That is the part of the job Beacon does: it puts your walk list on a map, routes each circulator door to door, and records the result at every door, so your circulators spend their time where the signers can actually sign. The signature itself stays on the paper sheet.
11. Filing at the minimum
Objections strike signatures that do not count, and the minimum is what you need after the strikes. Anyone who is a legal voter of the district may object (10 ILCS 5/10-8), and objections are due within five business days after the last filing day: November 2, 2026 on the February track, and December 1 or 2, 2026 on the April track (Guide p. 25; Calendar pp. 5, 25).
There is no legal rule for how much cushion to carry. As common practice, many campaigns aim for 1.5 to 2 times the minimum. If your office has a range, such as 5% to 8%, plan your cushion inside the ceiling. Our post on petition objections in Illinois explains why lines get struck and how a challenge proceeds.
12. Forgetting what has to be filed with the petition
The petition is not the only document. Candidates file a notarized Statement of Candidacy at the front of the packet, the petition sheets, and a receipt showing they filed a Statement of Economic Interests (Guide pp. 15, 17, 19). If any signatures were struck before filing, a Certificate of Deletions goes in too (Guide p. 15). New parties add a Certificate of Officers (Guide p. 10).
The SEI receipt trips people up most. The SEI itself is filed with the county clerk of the county where your unit of government has its principal office, and the receipt then goes to the office where you filed your petition, by 5:00 p.m. (or close of business) on the last day of filing (Guide pp. 22 to 23; Calendar p. 24). For the April track that is November 23, 2026. Once filed, a petition "cannot be modified, altered, or added to in any way," and the SEI receipt is the only exception (Guide p. 19).
Two more traps worth knowing
These did not make the list of 12 because they are less common, but each has cost candidates a ballot spot.
- Filing two sets of papers. If you file a second set, you must cancel the first in writing within the notice window, or only the first set counts (Guide p. 18; 10 ILCS 5/10-6.2).
- Filing for offices that cannot be held together. A candidate who files for incompatible offices must withdraw from all but one within five business days after the last filing day. For the April track that is December 2, 2026 (Guide p. 18; Calendar p. 25).
How to avoid all twelve
Almost every item above is prevented by two habits. The first is preparing sheets properly before they go out: heading complete, name exact, one circulator per sheet, inside the 90-day window. The second is reviewing the whole petition before you file, the way an objector would, while there is still time to collect replacement signatures. Our checklist for checking your own petition before you file walks through that review sheet by sheet.
The rest is volume. A petition with a real cushion, gathered from the right doors, survives the lines you lose. Our page on canvassing software for political campaigns shows how candidates organize that door work from petition season through Election Day.
If you want your circulators on mapped, routed walk lists inside your district this week, try Beacon free for 14 days. Every plan includes unlimited canvassers, so each volunteer you recruit can be on a route right away.