March 17, 2026
(Philadelphia, Pennsylvania) — Daniel Biss is the Democratic nominee and presumptive Congressman-elect for Illinois’ Ninth Congressional District. He defeated a crowded field of primary opponents in one of the most closely watched Democratic primaries in the country. In response, 314 Action President Shaughnessy Naughton released the following statement:
“Congratulations to the next Congressman for Illinois’ Ninth Congressional District, Daniel Biss,” said Shaughnessy Naughton, President of 314 Action. “This is the first decisive win in the midterms and a bellwether for competitive primaries in this cycle. Biss will become the sixth STEM member of Congress from the state of Illinois, representing the largest delegation of 314 Action-endorsed STEM leaders of any state in the country.”
“As the current mayor of Evanston, former state legislator and PhD mathematician, voters chose Daniel Biss to represent them because that’s who voters trust to make decisions in Congress. He led in every poll leading up to Election Day because he combined his experience with activism, using the mayor’s office to stand up to ICE, creating “ICE-free zones” and preventing the city’s license-plate data from being misused to take people off the street—that’s data-driven leadership.”
“314 Action Fund was proud to endorse and invest early in this race and we look forward to working with Daniel Biss in Congress.”
Background
- 314 Action Fund has invested nearly $410,000 on mail and digital ads to elect Daniel Biss (IL-09).
- 314 Action Fund endorsed Daniel Biss in Summer 2025, one of our earliest endorsements in the cycle. 314 Action has supported his candidacy since his 2018 campaign for governor and his successful run for mayor of Evanston in 2021 and 2025.
- In Illinois, 314 Action Fund has successfully elected and re-elected five members of Congress including, Rep. Sean Casten (IL-06), Rep. Brad Schneider (IL-10), Rep. Bill Foster (IL-11), Rep. Lauren Underwood (IL-14) and Rep. Eric Sorensen (IL-17) — this represents 314 Action’s most STEM incumbents in any state across the country.