Polling Average
30%25%20%15%10%5%0%
23.5%
15.4%
13.3%
7.1%
Democrat
Daniel Biss
Democratic candidate for U.S. House in Illinois
IL-09 Democratic nominee?
$1.1M
MAR 24, 2026Primary Election
Party selects its nominee.
Live Odds
Current prediction-market probability for the candidate, updated as market prices change.
Daniel Biss is trading at 99% to win the IL-09 Democratic nominee? on prediction markets.
Candidate Overview
Key details about the candidate’s background, party, office sought and current campaign.
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.comweareprogressives.orginstagram.comx.comfacebook.comevanstonroundtable.compolitico.comfox32chicago.comchicagotribune.comprospect.orgnytimes.comtheguardian.comballotpedia.orgbioguide.congress.govlegislation.ballotpedia.orgdata.ballotpedia.orgdonate.ballotpedia.orgcdn.ballotpedia.orgdeveloper.ballotpedia.orgcreativecommons.orgupload.wikimedia.orgdocquery.fec.gov
Political 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.
Latest 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.
fec.gov+58
Articles
CSChicago Sun-Times4 months ago
DNC condemns dark money influence but avoids taking stance on AIPAC
Positive
NNewsBreak5 months ago
Elizabeth Warren jumps into Democratic primary battles across the country
Positive
TGThe Gateway Pundit5 months ago
Far-Left Ilinois Congressional Candidate Indicted for Impeding ICE Loses Primary
Positive
WEWashington Examiner5 months ago
Daniel Biss wins Democratic primary to replace Jan Schakowsky
Positive
Latest Polls
IL-09 Democratic nominee?
Recent polling results and the candidate's current average in the race.
Daniel Biss currently averages 23.5%, ranking first in this race, 8.1 points ahead of the nearest opponent.
Polling average: 23.5%Position: firstMargin: +8.1 ptsLatest poll: 24.0% (Mar 9 - 10)Polls included: 10
Average recalculated from polls through Mar 9 - 10.
Aggregation source: FiftyPlusOne
Endorsements
16IL-09 Democratic nominee?
Campaign Fundraising
Latest report: Cycle 2026Campaign finance totals from the latest available reporting period.
Total 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