Don Harmon
Photo: David Kindler from Oak Park, United States, CC BY 2.0
DemocratIn office since Nov 2002

Don Harmon

Illinois State Senator, District 39 since 2002. Re-elected in 2026. Next on the ballot in 2030.

Illinois State Senator, District 39Born 1966

In office
24 yrs
Since 2002
Bills became law
7
616 sponsored, 2025–2026 session
Votes missed
2.3%
Chamber median 2.8%
With party
100%
On votes splitting the parties
Last margin
+53.3
Won 2006
Next election
2030
Nov 5, 2030

Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 1:51 PM ET

Committees

As of 2026-10.

  • Executive
  • Judiciary

Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET

Legislation

2025–2026 session · 616 sponsored · 7 became law
BillIntroCmteSenateHouseLaw
SB 3107 QUICK-TAKE OAK PARK
Became law Aug 2026
SB 3255 DHS-DSP PILOT PROGRAM
Became law Jun 2026
HB 1085 INS CD-MENTAL HEALTH PARITY
Became law Dec 2025
HB 2568 TRUST CODE-UNCLAIMED PROPERTY
Became law Dec 2025
HB 1312 POW MIA RECOGNITION DAY
Became law Dec 2025

Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET

Voting record

2025–2026 session · placement by roll-call votes

Where Harmon sits in the Illinois State Senate

Harmon is closer to the center than 26% of the chamber's Democrats.

Dem. medianRep. medianHarmonMore liberalMore conservative

Closest: Javier Cervantes, Laura Murphy, Sara Feigenholtz

Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 4:50 PM ET

With Harmon’s party

  • Votes with the chamber's Democrats100%
  • Cosponsorships of the other party's bills29%

Black tick: the average of Democrats in the Illinois State Senate.

Source: 99chambers legislative scores from roll calls and cosponsorships

Key votes

Votes chosen for their effect, not their side: Harmon’s vote, each party’s majority, and the result. An orange vote differs from most Democrats.

DateBillHarmonDem. majorityRep. majorityResult
May 31, 2026HB 5090: PROCUREMENT-CONSTRUCTIONYesYesNoPassed 42–12
May 31, 2026HB 4379: ADULT CHANGING STATIONSYesYesNoPassed 46–12
May 31, 2026HB 4571: COUNTIES CD-AFFORDABLE HOUSINGYesYesNoPassed 44–14
May 29, 2026HB 4758: JOB APPLICATION-DRIVER LICENSEYesYesNoPassed 41–15
May 29, 2026HB 4339: SCH CD-HIGH SCH-REGISTER VOTERYesYesNoPassed 41–12

Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls

Career

Offices held, and every time Harmon was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.

Source: 99chambers results archive (MEDSL, Klarner, state election offices)

Elections

Margin against the seat’s presidential baseline: how the seat voted for president in the same or nearest year.

YearRaceResultMarginSeat+/−
2026Illinois Legislative District 39Won—D+44.2—
2022Illinois State Senate, District 39Won———
2018Illinois State Senate, District 39Won———
2014Illinois State Senate, District 39Won———
2014Illinois State Senate, District 39 (primary)Won+64.3——
2012Illinois State Senate, District 39Won———
2008Illinois State Senate, District 39Won———
2006Illinois State Senate, District 39WonD+53.3——
2002Illinois State Senate, District 39Won———

Source: 99chambers results archive; 2026: civicAPI (unofficial)Updated Nov 8, 2026, 7:01 PM ET

Campaign money, 2025–26

Raised
$17.3M
Spent
$11.2M
Cash
$19.7M

Source: Illinois State Board of Elections filings through Sep 30, 2026Updated Nov 1, 2026, 9:15 AM ET

Campaign committees

Open committees can still raise and spend money.

Friends of Don Harmon for State Senate
State
Active

Source: Illinois State Board of Elections filings through Sep 30, 2026Updated Nov 1, 2026, 9:15 AM ET

Seats Harmon has held

Source: 99chambers results archive

Who Harmon has run against

Source: 99chambers results archive; 2026: civicAPI (unofficial)

How we know Harmon

One person, matched across every source we use.

Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 1:51 PM ET