2026 United States Senate special election in Cascade

        For related races, watch 2026 United States elections

2026 United States Senate special election in Cascade

← 2024 November 3, 2026 2028 →

Turnout 79.55%   Nominee Thomas Duberry Elizabeth Coin Party Unity Independent Democratic Alliance Democratic Republican Popular Vote 26,020,191 16,405,569 Percentage 60.7% 38.3%

Incumbent U.S. Senator Thomas Duberry Unity Elected U.S. Senator Thomas Duberry Unity

The 2026 United States Senate election in Cascade was held on Tuesday, November 5, 2024. Incumbent one-term Senator Elizabeth Coin resigned, State Rep. Vera Kapetanovic was appointed to the seat. Kapetanovic then resigned as well after a few days. Finally, Congressman Thomas Duberry was appointed to the seat.

Duberry returned, but was opposed by Coin, who announced her candidacy shortly before the filing deadline. Duberry managed to defeat Coin in the Democratic Party Primary by a margin of 51%-49% and defeated her in the general election in a landslide, winning 61% of the vote in a slight upset.

Appointment

First Appointment

Senator Elizabeth Coin retired after less than a year, forcing Cascade Democratic Party State Chair, Thomas Duberry to appoint a new Senator. Duberry appointed Socialist activist and State Representative, Vera Kapetanovic, who was considered controversial.

Final Nominee

• Vera Kapetanovic, Cascade State Rep (2023-) and Chair of the DSA

Other Candidates

• Claire Ardern, U.S Representative from CA-2 (2025-) and Chair of the FWC
• Hyojin Choi, Mayor of Baltimore (2025-) and 2024 Candidate for CA-2
• Jacob Johnson, Mayor of San Francisco (2023-)
• Harvey Fisch, Speaker of the House (2025-2026) from CA-1
• Jameson Woods, Governor of Cascade (2023-)

Second Appointment

After Kapetanovic resigned, Thomas Duberry appointed himself to the seat after meeting with several candidates.

Final Nominee

• Thomas Duberry, Chair of the Green Party, U.S Representative from CA-3 (2025-) and Mayor of Honolulu (2023-2025)

Other Candidates

• Hyojin Choi, Mayor of Baltimore (2025-) and 2024 Candidate for CA-2

Democratic Primary

Thomas Duberry won the Democratic Party's nomination by a margin of 51%-49%, despite being a member of the Unity Party. He was opposed by former Senator Elizabeth Coin, who had resigned from the seat a few months prior. There were instances of voter fraud, with the vast majority going to Coin.

Nominee

• Thomas Duberry, United States Senator (2026-) Representative from CA-3 (2025-2026), Mayor of Honolulu (2023-2025), and Chair of the Green Party

Elimated in Primary

• Elizabeth Coin, United States Senator (2025) and United States Representative from CA-1 (2023-2025)

Declined

• Harvey Fisch, DNC Chair (2023-2024) and San Francisco District Attorney (2023-2025) (Ran for Congress in CA-1)
• Eli Golstein, United States Representative from CA-3 (2023-2025)

Results

Candidate		Party	Vote	Percentage
	Thomas Duberry	Unity	12,764,732	50.7%
	Elizabeth Coin	Democratic	12,412,254	49.3%
Total			25,176,987	100.0%

Republican Primary

Candidates

The Republican Party failed to nominate anyone, instead endorsing Thomas Duberry.

Declined

• Harry Lo, Vice-Chair of the Progressive Republican Caucus and 2022 nominee for CA-2.
• Leon Salazar, Chair of the Progressive Republican Caucus and 2022 nominee for CA-3.

Unity Convention

Duberry was chosen by the Unity Party via unanimous consent.

Nominee

• Thomas Duberry, United States Senator (2026-) Representative from CA-3 (2025-2026), Mayor of Honolulu (2023-2025), and Chair of the Green Party

Declined

• Everett McKeown, U.S Representative from CA-2 (2026-) (Ran in the Regular Election)

Independents

Candidates

• Elizabeth Coin, United States Senator (2025) and United States Representative from CA-1 (2023-2025) (Originally running as a Democrat)

Declined

• Jiafei, U.S Rep from CA-2 (2023-2025)

General election

Political Violence

During the campaign, there was a fight in the city of San Francisco where both candidates held rallies at the same time. An Asian man supporting Duberry and a White woman supporting Coin were both sent to the hospital. They both sustained minor injuries and survived. Duberry and Coin condemed the fights.

Endorsements

Endorsements for Elizabeth Coin

Executive Branch Officials Barack Obama, former President of the United States (2013-2017) U.S Senators Dianne Feinstein, former Senator from California U.S Representatives Claire Swift, former U.S Representative from Cascade's 2nd District (2025-2025) and 2026 Democratic Nominee for Erie Senate Nancy Pelosi, former Speaker of the House from California Barbara Lee, fomer U.S Representative from California Katie Porter, fomer U.S Representative from California Adam Schiff, fomer U.S Representative from California Organizations Democracy for All PAC (Endorsement Revoked)

Endorsements for Thomas Duberry

Executive Branch Officials Phil Reed, President of the United States (2025-) (Republican) John Shake, Vice President of the United States (2026-) (Republican) U.S Senators Lee Cross, United States Senator from Concord (2025-), DNC Chair, and Chief Justice of the Supreme Court (Democratic) Brandon Bennet, U.S Senator from Chesapeake (2025-), Former DNC Chair Heidi Cruz, U.S Senator from Appalachia (2025-), Former DNC Chair, and 2026 Unity Nominee for Cascade Governor U.S Representatives Hyojin Choi, U.S Representative from Cascade's 2nd District (2026-) and 2024 Democratic Nominee for that same district Everett McKeown, U.S Representative from Cascade's 3rd District (2026-) and 2026 Unity Nominee for Cascade Senate Gears Braixen, U.S Representative from Magnolia's 2nd District (2025) and Governor of Concord (2025-2027) and Candidate for Concord's 2nd District (Republican) Eli Goldstein, Speaker of the House (2026-) and U.S Representative from Yellowstone's 2nd District (2025-) and Cascade's 3rd District (2023-2025) George Wit, U.S Representative from Appalachia's 2nd District (Republican) Jackson Burden, U.S Representative from Appalachia's 3rd District (2025-) (Republican) Fred Minion, U.S Representative from Chesapeake's 1st District (2023-) (Republican) Ethan Friedman, U.S Representative from Erie's 3rd District (2025-) (Republican) Andrew Reed, former Speaker of the House (2023-2025) and former U.S Representative from Amarillo's 1st District (2023-2025) (Republican) Vladik Kazakski, Secretary of Treasury (2026-) and U.S Representative from Yellowstone's 1st District (2025-) (Republican) John Kennedy, Governor of Yellowstone (2025) and Republican Nominee for Magnolia's 1st District (Republican) Mary Peltola, former U.S Representative from Alaska State Officeholders David Ige, former Governor of Hawaii (Democratic) Josh Greene, former Governor and former Lieutenant Governor of Hawaii (Democratic) Sylvia Luke, former Lieutenant Governor of Hawaii (Democratic) Samuel Freebart, former Lieutenant Governor of Cascade Les Gara, former Alaska State Senator Local Officals Franklin Gresham Jr, Boise City Council Member Rick Blangiardi, former Mayor of Honolulu (Independent) Cassandra Wang, Mayor of Honolulu (2026-) Keith Amemiya, Deputy Mayor of Honolulu (Democratic) Teng Hao, King County Executive (2027-) Sarah Jean, Mayor of Portland (2020-) Individuals John Payton, 2026 Candidate for Amarillo Senate and Bank President (Republican) (Rejected) Adrian Jones, 2026 Candidate for Appalachia Senate (Republican) Eleanor Annika Templeton, 2024 and 2026 Candidate for Magnolia Senate (Democratic) Daniela Olivera, 2026 Candidate for Amarillo's 3rd District Vicky Cayetano, former First Lady of Hawaii (Democratic) Andria Tupola, Chair of the Hawaii Unity Party (2026-) Arit Arun, Social Activist (Democratic) Mike Ter Matt, Economist (Libertarian) Organizations Republican Party of Cascade Democratic Party of Cascade Unity Party of Cascade Fighters for the Working Class Tea Party Caucus

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Results

Electoral results

Candidate		Party	Vote	Percentage
	Thomas Duberry	Unity/Democratic	26,020,191	60.7%
	Elizabeth Coin	Independent Democrat	16,405,569	38.3%
	Write-ins	Non-affiliated	465,189	1.0%
Total			42,890,949	100.0%

See also

Elections in the United States
2022	Senate	Concord | Chesapeake | Appalachia | Amarillo | Yellowstone
	House of Representatives	Concord | Chesapeake | Appalachia | Magnolia | Erie | Amarillo | Yellowstone | Cascade
	Governors	Chesapeake | Magnolia | Erie | Cascade
2024	President	Concord | Chesapeake | Appalachia | Magnolia | Erie | Amarillo | Yellowstone | Cascade
	Senate	Concord | Chesapeake | Magnolia | Erie | Yellowstone | Cascade
	House of Representatives	Concord | Chesapeake | Appalachia | Magnolia | Erie | Amarillo | Yellowstone | Cascade
	Governors	Concord | Appalachia | Amarillo | Yellowstone
2026	Senate	Appalachia | Magnolia | Erie | Amarillo | Cascade (reg.) | Cascade (reg.)
	House of Representatives	Concord | Chesapeake | Appalachia | Magnolia | Erie | Amarillo | Yellowstone | Cascade
	Governors	Chesapeake | Magnolia | Erie | Yellowstone (spe.) | Cascade
2028	President	Concord | Chesapeake | Appalachia | Magnolia | Erie | Amarillo | Yellowstone | Cascade
	Senate	Concord | Chesapeake | Appalachia | Amarillo | Yellowstone | Cascade (spe.)
	House of Representatives	Concord | Chesapeake | Appalachia | Magnolia | Erie | Amarillo | Yellowstone | Cascade
	Governors	Concord | Appalachia | Amarillo | Yellowstone