The 2026 United States Senate election in Delaware will be held on November 3, 2026, to elect a member of the United States Senate to represent the state of Delaware. Democratic incumbent Chris Coons is seeking a third full term. He is being challenged by Republican former state senator Michael Katz.
Primary elections took place on September 15. Coons won the Democratic nomination with 78% of the vote against minimal opposition. Katz, a former Democratic state senator, won the Republican nomination with 77.3% of the vote against U.S. Army War College instructor John Shulli.
Republicans have not won a Senate election in Delaware since 1994.
Democratic primary Candidates Nominee Chris Coons, incumbent U.S. senator (2010–present)
Eliminated in primary Jeff Appelhans, former teacher and historian Eric No-Trump Hansen, businessman and Republican nominee for U.S. Senate in 2024 Mary Louve, naval architect and Marine engineer
Withdrawn Christopher Beardsley, former federal employee (running for state senate)
Endorsements
Fundraising Campaign finance reports as of August 26, 2026CandidateRaisedSpentCash on handJeff Appelhans (D)$1,468$83$1,385Chris Coons (D)$6,897,138$3,944,267$4,793,384Chris Beardsley (D)$22,356$13,165$9,191Source: Federal Election Commission
Results
Republican primary Candidates Nominee Michael Katz, former Democratic state senator (2009–2013) and Independent Party nominee for U.S. Senate in 2024 Eliminated in primary John Shulli, instructor at the U.S. Army War College
Endorsements
Fundraising Campaign finance reports as of August 26, 2026CandidateRaisedSpentCash on handJohn Shulli (R)$118,334$109,920$8,414Michael Katz (R) $159,367$60,954$98,413Source: Federal Election Commission
Results
General election Predictions SourceRankingAs ofThe Cook Political ReportSeptember 23, 2026Decision Desk HQOctober 2, 2026The EconomistOctober 3, 2026FiftyPlusOneOctober 3, 2026Fox NewsSeptember 22, 2026Inside ElectionsOctober 1, 2026RealClearPoliticsSeptember 24, 2026Sabato's Crystal BallSeptember 22, 2026Silver BulletinOctober 3, 2026Split TicketOctober 2, 2026
Fundraising Campaign finance reports as of August 26, 2026CandidateRaisedSpentCash on handChris Coons (D)$6,897,138$3,944,267$4,793,384Michael Katz (R)$159,367$60,954$98,413Source: Federal Election Commission
Notes
See also 2026 Delaware elections
References
External links Official campaign websites Chris Coons (D) Mike Katz (R)