Polling Average
30%25%20%15%10%5%0%
23.5%
15.4%
13.3%
7.1%
Democrat
Daniel Biss
IL-09 Democratic nominee?
$1.1M
MAR 24, 2026Primary Election
Party selects its nominee.
Overview
Current roleFormer State Senator
PartyDemocratic
Political ideologyProgressive Democrat
Age48 years old (Aug 27, 1977)
GenderMale
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LocationIllinois
BackgroundPolitician
EducationHarvard University — B.A., Mathematics (1998)
Notable personal detailsDaniel Kálmán Biss is an American mathematician and Democratic politician who has served as mayor of Evanston, Illinois since May 10, 2021. He previously represented the 17th District in the Illinois House (2011–2013) and the 9th District in the Illinois Senate (2013–2019). Before elected office, he was an assistant professor of mathematics at the University of Chicago.
SourcesShowHide
fec.goven.wikipedia.orgwikidata.orgchicago.suntimes.comcityofevanston.civicweb.netcommons.wikimedia.orgiit.eduhigherlogicdownload.s3.amazonaws.comcivicleadershipfoundation.orgde.wikipedia.orgdailyherald.comgov.harvard.eduncbi.nlm.nih.govimdb.comforward.compsychology.illinois.eduscholar.harvard.educentralstreetneighbors.comtrustees.uillinois.eduwcbu.orgrblandmark.comwglt.orgmyjournalcourier.comdailynorthwestern.comdanielbiss.comnprillinois.orgnationalnursesunited.orgdemocracynow.orgjustfacts.votesmart.orglcv.orgnrdcactionfund.orggivegreen.comarchive.phpeoplesaction.orgtimesofisrael.comilga.govabc7chicago.comevanstonnow.comevanstonroundtable.combroadwayworld.comweareprogressives.orgfacebook.comx.cominstagram.comchicagotribune.compolitico.comfox32chicago.comibjonline.compatch.comballotpedia.orgnytimes.comclimatehawksvote.combioguide.congress.govlegislation.ballotpedia.orgdata.ballotpedia.orgdonate.ballotpedia.orgcdn.ballotpedia.orgdeveloper.ballotpedia.orgcreativecommons.orgupload.wikimedia.orgdocquery.fec.gov
Positions
LiberalConservative
Economy & Taxes
Supports replacing Illinois' flat income tax with a graduated (progressive) income tax, advocates additional taxes on high-end financial transactions and taxing wealthier retirement income while pursuing property-tax reform to reduce burdens on middle- and working-class homeowners.
Healthcare
Supports a national single-payer health system such as Medicare for All and advocates for universal coverage. Campaign materials and past statements commit to pursuing single-payer policies and protecting coverage for people with pre-existing conditions.
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Immigration & Border
Supports limits on federal immigration enforcement at the local/state level and policies to protect immigrant communities; has condemned ICE/Border Patrol raids in Evanston and directed local actions to investigate and shield residents. Has previously co‑sponsored state legislation (the TRUST Act) to restrict local cooperation with federal immigration enforcement and to create protected spaces for immigrants.
Abortion & Reproductive Rights
Supports legal access to abortion and has a record of championing and bolstering abortion rights in Illinois; positions and endorsements describe him as a pro-choice, progressive defender of reproductive access.
Climate & Energy
Supports aggressive federal action to confront the climate crisis, including investing in clean energy, holding polluters accountable, and advancing building- and community-level measures to reduce emissions. Emphasizes transitioning to clean energy while prioritizing jobs, affordability, and public health.
Public Safety & Guns
Supports broad, progressive gun-safety measures including repeal of the Second Amendment, universal background checks, a federal assault-weapons ban and limits on high-capacity magazines, expanded red-flag laws, safe-storage requirements, and ending legal immunity for the gun industry.
News
AINews Summary
Last updatedJul 15, 2026
Daniel Biss has won the Democratic primary in Illinois’ 9th Congressional District and will move on to the general election against Republican John Elleson. His victory came in a closely watched race marked by heavy outside spending and intraparty debate over AIPAC-related money. Biss also drew support from prominent Democrats, including Tammy Duckworth and Elizabeth Warren, and Jan Schakowsky backed him after withdrawing support from another candidate over AIPAC funding concerns.
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Articles
CSChicago Sun-Times4 months ago
DNC condemns dark money influence but avoids taking stance on AIPAC
Positive
NNewsBreak4 months ago
Elizabeth Warren jumps into Democratic primary battles across the country
Positive
TGThe Gateway Pundit4 months ago
Far-Left Ilinois Congressional Candidate Indicted for Impeding ICE Loses Primary
Positive
WEWashington Examiner4 months ago
Daniel Biss wins Democratic primary to replace Jan Schakowsky
Positive
Polls
IL-09 Democratic nominee?
Aggregation source: FiftyPlusOne
Endorsements
IL-09 Democratic nominee?
Endorsers of Daniel Biss for IL-09 Democratic nominee?
Actors' Equity Association
Advocacy group
Actors' Equity Association endorsed Daniel Biss for Illinois's 9th Congressional District.
Everytown for Gun Safety / Moms Demand Action for Gun Sense in America
Public endorsement
Everytown for Gun Safety and Moms Demand Action endorsed Daniel Biss.
Congressional Progressive Caucus
Advocacy group
Congressional Progressive Caucus endorsed Daniel Biss in the Illinois 9th district primary.
National Nurses United
Public figure
National Nurses United endorsed Daniel Biss for Illinois’ 9th District.
Illinois Federation of Teachers
Labor organization
Illinois Federation of Teachers endorsed Daniel Biss in the 9th Congressional District race.
Robyn Gabel
Public figure
Robyn Gabel endorsed Daniel Biss for Illinois’ 9th Congressional District.
Jan Schakowsky
Public figure
Jan Schakowsky endorsed Daniel Biss for the Illinois 9th congressional district race.
Congressional Progressive Caucus PAC
Political organization
Congressional Progressive Caucus PAC endorsed Daniel Biss for Illinois' 9th District.
Fundraising
Latest report: Cycle 2026Total raisedCash on hand
$2.9M
$2.2M
$1.5M
$736.7K
$0
2026
LatestYear
Total raised
Cash on hand
Total spent
Burn rate
Cycle 2026
$2.9M
$262.1K
$2.7M
$149.1K
Source: FEC