Lead: Lt. Gov. Juliana Stratton won the Illinois Democratic Senate primary on Tuesday, projected by NBC News, defeating U.S. Reps. Raja Krishnamoorthi and Robin Kelly to succeed retiring Sen. Dick Durbin. The decisive edge came from vote-rich Cook County, where Stratton led with 40 percent to Krishnamoorthi’s 29 percent and Kelly’s 23 percent with roughly 80 percent of expected ballots counted. Backed publicly by Gov. JB Pritzker and boosted by outside advertising, Stratton overcame a large fundraising gap and now heads into a November general election matchup against Republican Don Tracy. If elected, she would be the sixth Black woman ever to serve in the U.S. Senate and would create the first instance of three Black women serving simultaneously.
- Key Takeaway: Stratton was projected the winner of the June Democratic primary to fill the seat of retiring Sen. Dick Durbin.
- Cook County results drove the outcome: Stratton earned 40% there, Krishnamoorthi 29% and Kelly 23% with about 80% of expected votes reported.
- Campaign spending disparities were stark: Krishnamoorthi spent about $29 million on ads, while Stratton’s campaign reported roughly $1.1 million and Kelly’s $1.4 million.
- Illinois Future PAC, backed by Gov. JB Pritzker, spent about $14.9 million on ads supporting Stratton and attacking Krishnamoorthi.
- Stratton faced nearly $10 million in outside attack ads from Fairshake, a group funded by cryptocurrency executives; the group declined comment on this race.
- Endorsements included Gov. JB Pritzker, Sen. Tammy Duckworth and Sen. Elizabeth Warren, signaling establishment and progressive backing.
- Stratton positions herself as the race’s most progressive candidate—backing Medicare for All, a $25 minimum wage and abolition of ICE—while rejecting continued Senate leadership for Chuck Schumer.
- She will likely be favored in the November general election in Democratic-leaning Illinois, where President Biden carried the state by double digits in recent cycles.
Background
Illinois’ open-seat contest is prompted by the retirement of Sen. Dick Durbin, a longtime Democratic senator whose departure created one of the marquee Senate battles of the 2026 cycle. The Democratic primary quickly became crowded and expensive, drawing multiple House members and heavy outside spending. In-state political dynamics—Chicago’s dominant vote share, suburban volatility and deep union and progressive networks—shaped candidate strategies and targeted advertising.
Juliana Stratton, a South Side native, served in the Illinois Legislature before joining Gov. JB Pritzker’s ticket as lieutenant governor in 2018. Her political résumé combines state-level executive experience with ties to Chicago’s progressive coalitions, a contrast to her primary rivals who emphasized federal legislative experience and fundraising clout. The race also unfolded against the backdrop of national debates over China policy, immigration enforcement, crypto regulation and Democratic leadership, giving candidates opportunities to differentiate on ideology and strategy.
Main Event
On primary night, vote tallies from Cook County drove Stratton’s path to victory. With approximately 80 percent of expected votes counted, she led the county with 40 percent, outpacing Krishnamoorthi and Kelly in the city of Chicago by a wide margin and splitting suburban returns with Krishnamoorthi. The Cook County advantage outweighed Krishnamoorthi’s massive ad spending and broader name recognition from his five terms in the U.S. House.
Stratton’s campaign message emphasized a combative stance toward the Trump-era federal approach and the need for Democratic fighters in Washington. She framed her platform around progressive economic and immigration reforms and positioned herself as the candidate most willing to challenge party leadership, including saying she would not back Senate Minority Leader Chuck Schumer to remain leader of the caucus.
Outside spending played an outsized role. Ad-tracking data reported Krishnamoorthi spent about $29 million on ads during the primary. By contrast, Stratton’s campaign disclosed roughly $1.1 million in ad spending, while Kelly’s campaign reported about $1.4 million. Illinois Future PAC—supported by Pritzker—spent about $14.9 million on ads favorable to Stratton and negative to Krishnamoorthi, narrowing the financial gap in practice.
Stratton also absorbed nearly $10 million in negative advertising from Fairshake, a group backed by cryptocurrency executives; the group declined to comment on its expenditures in this specific race. Questions about the motives for outside funding and the interplay between state crypto laws and political targeting emerged during the closing weeks of the primary.
Analysis & Implications
Stratton’s win illustrates the continuing influence of localized voter blocs—most notably Cook County and the city of Chicago—on statewide Democratic primaries in Illinois. Her strong showing in Chicago underscores the advantage candidates with deep urban roots and aligned endorsements can gain when turnout skews to dense population centers. That dynamic offset a raw fundraising imbalance and heavy ad buys by a well-funded House incumbent.
The role of Illinois Future PAC demonstrates how well-funded state allies can alter the competitiveness of an expensive primary. Pritzker’s decision to invest—including through a PAC that spent nearly $15 million—suggests governors and other statewide leaders can be decisive in shaping Senate primaries, particularly when they marshal personal wealth or donor networks to amplify a preferred candidate.
Strategically, Stratton’s progressive platform and vocal refusal to support existing Senate leadership signal potential intra-party tensions if she reaches Washington. Her positions—Medicare for All, a $25 minimum wage and abolition of ICE—could expand the Democratic policy debate in the Senate and complicate common messaging in a general election. Republicans will likely attempt to nationalize those proposals as ripe for attack in November.
Electorally, Illinois’ recent partisan lean and presidential performance provide a favorable baseline for the Democratic nominee; former Vice President Kamala Harris won Illinois by 11 percentage points in 2024. Nonetheless, national environment, turnout patterns and targeted Republican messaging could compress margins, so the general election is not a foregone conclusion despite the state’s Democratic tilt.
Comparison & Data
| Candidate | Primary Ad Spend (reported) | Cook County Share |
|---|---|---|
| Raja Krishnamoorthi | $29 million | 29% (county averaged) |
| Juliana Stratton | $1.1 million | 40% (led) |
| Robin Kelly | $1.4 million | 23% |
| Illinois Future PAC (Pritzker-backed) | $14.9 million (outside ads) | Supported Stratton |
| Fairshake (crypto-funded) | ~$10 million (attacks) | Opposed Stratton |
The table above summarizes reported ad spending and Cook County vote shares that were central to the primary outcome. While raw campaign spending favored Krishnamoorthi by a large margin, outside PAC spending narrowed the practical advantage. Urban vote concentration in Cook County decisively benefited Stratton; suburban splits were much closer and could be key in a general election.
Reactions & Quotes
Campaign and public reactions highlighted frustration with national politics and relief among Stratton supporters that her profile could translate to a general-election win.
“What I’ve heard from people very clearly is that they are fed up with what’s happening in Washington… They’re looking for a fighter in Washington.”
Juliana Stratton
Stratton used that language to cast herself as a challenger to both Republican control and complacent elements within her own party. Pritzker’s backing was framed by his allies as a pragmatic move to deliver electability and organizational muscle.
“We need leaders who can win statewide and bring people together to deliver results for Illinois.”
Governor JB Pritzker (endorsement statement)
Republican and independent observers noted the race’s heavy outside spending and signaled that similar financial activity will likely shape the November contest. Analysts flagged the primary as an example of how endorsements and PAC investments can overcome raw ad-dollar disparities.
Unconfirmed
- Any direct, documented financial linkage tying Gov. Pritzker personally to Fairshake’s spending remains unreported and unconfirmed.
- Claims that Fairshake’s advertising was ordered in direct response to state crypto regulations are plausible but not independently verified.
- Assertions that Stratton’s refusal to support Sen. Schumer will determine caucus leadership outcomes are speculative until post-election caucus discussions begin.
Bottom Line
Juliana Stratton’s primary victory demonstrates the enduring power of urban voting blocs and strategic outside support in high-profile statewide Democratic contests. Despite being heavily outspent in direct campaign ads, Stratton leveraged Cook County margins, high-profile endorsements and substantial PAC assistance to secure the nomination.
Looking ahead, the general election will test whether the same coalition that carried her through the primary can hold across suburban and downstate areas in November. Outside spending and nationalized messaging are likely to intensify; observers should watch turnout patterns in Cook County and suburban shifts to gauge the race’s trajectory.
Sources
- NBC News — media reporting (primary projection, vote shares, spending figures, endorsements)