Lt. Gov. Juliana Stratton has emerged victorious in a crowded and historically expensive Democratic primary to succeed retiring U.S. Sen. Dick Durbin. By leveraging a coalition of Chicago progressives and downstate voters, and bolstered by significant financial support from Governor JB Pritzker’s political network, Stratton overcame an early polling deficit to defeat U.S. Rep. Raja Krishnamoorthi. The race, defined by debates over campaign finance, immigration policy, and the influence of “dark money,” sets the stage for a general election where Stratton starts as the heavy favorite against Republican nominee Don Tracy.
CHICAGO — Lt. Gov. Juliana Stratton rode a late wave of momentum Tuesday night to capture the Democratic nomination for Illinois’ open U.S. Senate seat, ending a contentious primary battle that saw more than $60 million in total spending. Stratton successfully toppled longtime frontrunner Rep. Raja Krishnamoorthi by framing herself as a courageous outsider, despite her position in the state’s executive branch, and capitalizing on the formidable political machinery of Gov. JB Pritzker.
With 82% of precincts reporting, Stratton held a decisive 39.6% to 33.6% lead over Krishnamoorthi. The margin of approximately 50,000 votes out of more than 900,000 cast proved insurmountable for the suburban congressman. Rep. Robin Kelly, D-Lynwood, trailed in third place with 18.5% of the vote. The Associated Press officially called the race for Stratton at 9:40 p.m. local time, sparking a raucous celebration at her campaign headquarters on Chicago’s West Side.
“Eleven months ago, I made a promise to Illinois to be the fighter you deserve, to go to the mat fighting for you, and bring your voices with me to Washington,” Stratton told a cheering crowd of supporters. “I haven’t forgotten that promise. This victory belongs to the working families who believe that our best days are still ahead of us.”
A Coalition of City and Downstate Strength
The geography of Stratton’s victory revealed a sophisticated multi-regional strategy. She dominated the city of Chicago, securing approximately 44% of the vote compared to 25% for Kelly and 23% for Krishnamoorthi. While Krishnamoorthi maintained his expected strength in the suburban “collar” counties—winning DuPage, Lake, and Kane—Stratton fought him to a near-draw in suburban Cook County and snatched Will County from his column.
Perhaps most surprising was Stratton’s resilience in downstate Illinois. She carried significant margins in Democratic strongholds and population centers such as the Metro East (near St. Louis), Springfield, Bloomington-Normal, and Champaign-Urbana. This geographic breadth suggests a broad appeal that transcended the typical Chicago-versus-downstate divide often seen in Illinois politics.
“We never lost sight of what’s most important, and that is courage,” Stratton said during her victory speech. “Courage powered this campaign, and courage will bring this fight straight to Washington.”
During her remarks, Stratton doubled down on the progressive platform that defined her primary run. She pledged to continue advocating for the abolition of the U.S. Immigration and Customs Enforcement (ICE) agency, a $25 per hour federal minimum wage, and the institution of “Medicaid for All.”
Krishnamoorthi Concedes as “The Guy Nobody Sent”
Across town at Krishnamoorthi’s election night event, the atmosphere turned somber early in the evening. A large projector displayed live results that consistently showed Stratton maintaining her six-point lead. By 9:00 p.m., the feed was disconnected and replaced with a static campaign logo as staffers began to huddle in hushed conversations.
Krishnamoorthi took the stage shortly after 9:30 p.m. to announce he had called Stratton to concede. Flanked by his wife and two of his children, the congressman struck a defiant yet respectful tone.
“Obviously, this is not the result we sought,” Krishnamoorthi told his supporters. “But unlike some in the current political landscape, I’m not going to question the outcome. I’m proud of the race we ran. And I’m honored at the support we received from every corner of the state, from Rockford to Cairo.”
In a pointed reference to the “Chicago machine” and the influence of Governor Pritzker, Krishnamoorthi cast himself as the underdog. He thanked those who “had the courage to defy the party establishment and endorse the candidate with 29 letters in his name.” He also took a final swipe at the financial dynamics of the race, noting he had to “compete against very wealthy interests”—a reference to the Pritzker-funded Illinois Future PAC that spent millions to boost Stratton’s candidacy.
The Financial Arms Race and “Dark Money”
The primary to replace Sen. Dick Durbin, who has held the seat since 1997, will go down as one of the most expensive in Illinois history. Krishnamoorthi, known as a prolific fundraiser, entered the race with a $19 million war chest. By the end of the cycle, his campaign had spent more than $27 million, including a non-stop television blitz that began in July 2025.
Despite his financial advantage, Krishnamoorthi’s polling numbers appeared to hit a ceiling in the mid-30s. His campaign also faced significant headwinds in January following reports of contributions from donors with ties to the current presidential administration. Specifically, Krishnamoorthi was scrutinized for accepting nearly $30,000 from an executive at Palantir, a company with extensive ICE contracts. While Krishnamoorthi eventually donated an equivalent amount to immigrant rights groups, the controversy occurred just as “Operation Midway Blitz”—a high-profile federal immigration enforcement action—was dominating local headlines.
Stratton, meanwhile, struggled with federal contribution limits early in her campaign. She attempted to turn this into a political asset by refusing corporate PAC money. However, the tide turned when the Illinois Future PAC, largely bankrolled by Governor Pritzker, launched a massive ad campaign in early 2026. Because PACs are not subject to the same contribution limits as candidate committees, Pritzker was able to provide the “air cover” Stratton needed to close the gap.
The race was further complicated by more than $10 million in “dark money” from cryptocurrency-aligned PACs. These groups ran ads attacking Stratton while simultaneously boosting Rep. Robin Kelly. Strategists within the Stratton camp alleged this was a calculated effort to split the Black vote between the two female candidates, though the effort ultimately failed to prevent Stratton’s victory.
Republican Outlook and Congressional Shifts
On the Republican side, former State Party Chair Don Tracy secured the nomination with 40% of the vote. Tracy, who campaigned on a platform of reducing the cost of living and energy independence, faced a field of five lesser-known candidates. In his victory speech in Springfield, Tracy acknowledged his “underdog” status but promised a “victory in November that will shock the nation.”
The primary also saw significant movement in Illinois’ congressional delegation. In the 9th District, Evanston Mayor Daniel Biss won a contentious primary with 30% of the vote. In the 2nd District, Cook County Commissioner Donna Miller emerged victorious in a 10-candidate field, while State Rep. La Shawn Ford took the Democratic nod in the 7th District. Former U.S. Rep. Melissa Bean also secured a comeback victory in the 8th District.
As the dust settles on the primary, the focus shifts to the general election. Stratton enters the race as the heavy favorite to succeed Durbin, aiming to become the first Black woman to represent Illinois in the U.S. Senate since Carol Moseley Braun.
