Dan Sullivan
(R) - Incumbent, seeking third term; at about 42% in primary (certified), advancing to RCV general
Mary Peltola
(D) - Former US Rep; led primary at about 49% (certified), advancing to RCV general; sole Democrat on ballot after Leslie withdrew
Dan J. Sullivan Jr.
(R) - Retired teacher from Petersburg; name-sharing 3rd-place finisher (certified), advancing to RCV general
Certified Sep 2: Ballot set for November. Peltola (D) and Sen. Sullivan (R, incumbent) clearly advanced with about 49% and 42% respectively. Dan J. Sullivan Jr. (R, name-sharing retired teacher from Petersburg) certified 3rd. David Leslie (D, democratic socialist) finished 4th but withdrew Sep 1 before the certification deadline, elevating Republican Gerald Heikes (R) to the 4th ballot spot. November RCV ballot: Sullivan (R), Peltola (D), Dan J. Sullivan Jr. (R), Heikes (R). DOJ grand jury probe into Dan J. Sullivan Jr.'s entry (potential voter confusion) remains ongoing.
Updated: Sep 10, 2026
Ashley Hinson
(R) - Congresswoman, Trump-endorsed, won Jun 2 primary 73.9%
Josh Turek
(D) - State representative, won Jun 2 primary 62.6%
Nominees set; primaries held June 2, 2026 (open seat, Ernst retiring); Cook Political Report moved from Lean R to Toss-up on Aug 20, 2026, citing competitive polling and Turek's strong independent-voter support; Inside Elections had moved from Lean R to Tilt R on Aug 6.
Updated: Sep 10, 2026
Susan Collins
(R) - Incumbent, seeking sixth term
Troy Jackson
(D) - Former state Senate president; formally nominated at Jul 25 Bangor convention with 90%+ of delegates; all serious rivals dropped out by Jul 19
Nominees set: Jackson nominated at Jul 25 Bangor convention (601 delegates, won 90%+); Platner won June primary but withdrew Jul 8 amid scandal; Jackson defeated only minor challenger Saundra Pelletier at convention. In mid-August, a resurfaced 1988 Fort Kent police report alleged Jackson assaulted a man and pushed his partner; Jackson denied being violent with his partner and said he takes responsibility for the 1988 fight; Collins has seized on the story.
Updated: Sep 10, 2026
Abdul El-Sayed
(D) - Progressive public health advocate; won Aug 4 Democratic primary over Rep. Haley Stevens despite $60M+ in outside spending against him (NBC News projection)
Mike Rogers
(R) - Former congressman, 2024 nominee, GOP nominee
Nominees set: El-Sayed won Aug 4 Democratic primary over Stevens despite $60M+ in outside spending against him; Rogers was GOP nominee (no competitive primary). Open seat, Peters retiring.
Updated: Sep 10, 2026
Chris Pappas
(D) - US Rep; won Sep 8 Dem primary about 62% over Manzur (election-night count, NBC News, NHPR)
John Sununu
(R) - Former US Senator, Trump-endorsed; won Sep 8 GOP primary about 69% over Brown and Sivalingam (election-night count, NBC News, Roll Call)
Nominees set: Sununu won Sep 8 GOP primary (about 69%, election-night count, AP called) over Brown and Sivalingam; Pappas won Sep 8 Dem primary (about 62%, election-night count, AP called) over Manzur. Open seat, Shaheen retiring. Cook Political Report and Sabato's Crystal Ball both moved from Lean/Tilt D to Toss-up on Sep 3, 2026; Trump had endorsed Sununu over Brown before the primary. General election: Sununu (R) vs. Pappas (D).
Updated: Sep 10, 2026
Jon Husted
(R) - Appointed incumbent (filling JD Vance's seat)
Sherrod Brown
(D) - Former three-term senator
Nominees set; both won May 2026 primaries (Husted unopposed, Brown with 89.4%)
Updated: Sep 10, 2026
Ken Paxton
(R) - State AG, won May 26 runoff over incumbent Cornyn
James Talarico
(D) - State representative, won Dem primary 52.4%
Nominees set; Paxton beat Cornyn 63.8% in May 26 GOP runoff; Talarico beat Crockett for Dem nod. Cook Political Report moved from Lean R to Toss-up on Aug 20, 2026, citing Paxton's high disapproval ratings and underperformance vs. a generic Republican in GOP polling. Sabato's Crystal Ball also moved from Lean R to Toss-up on Aug 26, 2026.
Updated: Sep 10, 2026
Roy Cooper
(D) - Former Governor, Democratic nominee
Michael Whatley
(R) - Former RNC chair, Trump-backed Republican nominee
Open seat (Tillis retiring); nominees set after Mar 3 primaries. Sabato's Crystal Ball moved from Toss-up to Lean D on Aug 19, 2026 (Cook Political Report was already Lean D).
Updated: Sep 10, 2026
Jon Ossoff
(D) - Incumbent
Mike Collins
(R) - US Rep, Trump-endorsed, won Jun 16 runoff 55.5% over Derek Dooley
Nominees set: GOP runoff held Jun 16 after May 19 primary
Updated: Sep 10, 2026
Roger Marshall
(R) - Incumbent, won Aug 4 GOP primary
Adam Hamilton
(D) - Methodist pastor; won Aug 4 Democratic primary from crowded 11-candidate field
Nominees set after Aug 4 primaries: Marshall won GOP primary; Hamilton won Democratic primary from crowded 11-candidate field. Cook moved from Safe to Likely R on Jul 6, 2026.
Updated: Sep 10, 2026
Andy Barr
(R) - Congressman, Trump-endorsed, won May 19 primary 60.5% over Daniel Cameron
Charles Booker
(D) - Won May 19 primary with 47%; 2022 nominee
Nominees set; primaries held May 19, 2026 (open seat, McConnell retiring)
Updated: Sep 10, 2026
Peggy Flanagan
(D) - Lt. Governor; won Aug 11 DFL Senate primary over Rep. Angie Craig 58.7-39.7%
Michele Tafoya
(R) - NRSC-endorsed; won Aug 11 GOP Senate primary with about 52% over state party-endorsed Schwarze and Royce White
Nominees set: Flanagan won Aug 11 DFL primary over Craig 58.7-39.7%; Tafoya won GOP primary with about 52% over state party-endorsed Schwarze (24%) and Royce White (11%). General election: Flanagan vs. Tafoya. Open seat, Smith retiring.
Updated: Sep 10, 2026
Cindy Hyde-Smith
(R) - Incumbent, won Mar 10 primary with 80.8%
Scott Colom
(D) - District attorney, won Mar 10 primary
Ty Pinkins
(I) - Independent
Nominees set; primaries held Mar 10, 2026
Updated: Sep 10, 2026
Pete Ricketts
(R) - Incumbent, won May 12 primary with 81.8%
Dan Osborn
(I) - Former union leader, 2024 candidate; no poll shows Ricketts pulling clear in a state Trump won by 20 pts
Nominees set; primaries held May 12, 2026; Burbank formally filed to withdraw from ballot Jul 17 (Nebraska SOS disputed withdrawal; legal challenge followed; Nebraska Dems not naming a replacement); race is effectively Ricketts vs. independent Osborn
Updated: Sep 10, 2026
Barry Moore
(R) - US Rep, Trump-endorsed, won Jun 16 runoff 55.8%
Everett Wess
(D) - Attorney, won Jun 16 runoff 54.6%
Nominees set: open seat (Tuberville ran for governor); May 19 primaries went to Jun 16 runoffs
Updated: Sep 10, 2026
Tom Cotton
(R) - Incumbent, won primary 81.6%
Hallie Shoffner
(D) - Farmer, won primary 78.3%
Nominees set: primaries held Mar 3, 2026
Updated: Sep 10, 2026
John Hickenlooper
(D) - Incumbent, won primary 53% over Julie Gonzales
Mark Baisley
(R) - State senator
Nominees set: Jun 30 primaries done (Baisley advanced unopposed via state assembly)
Updated: Sep 10, 2026
Chris Coons
(D) - Incumbent, heavy front-runner; faces Christopher Beardsley in primary
Michael Katz
(R) - Primary contender vs John Shulli, no clear front-runner
Primary upcoming Sep 15, 2026
Updated: Sep 10, 2026
Ashley Moody
(R) - Appointed incumbent; won Aug 18 GOP primary with about 80% over Chris Gleason (14%) and two others
Angie Nixon
(D) - Florida state Rep., democratic socialist; upset front-runner Alex Vindman in Aug 18 Dem primary 56.1% to 43.9% (705,192 to 552,774 votes, CNN, NBC News projection)
Nominees set: Moody won GOP primary with about 80% over three challengers; Nixon upset front-runner Vindman in Dem primary 56.1%-43.9% (705,192 to 552,774 votes, 99% precincts, Aug 18 primary)
Updated: Sep 10, 2026
Jim Risch
(R) - Incumbent, won primary 67.3%
Todd Achilles
(I) - Former Democratic state legislator and Army veteran; became main challenger after Roth withdrew Jul 28; raised $692k vs Risch $3.3M
Nominees set: primaries held May 19, 2026; Dem nominee David Roth withdrew Jul 28, cleared path for independent Todd Achilles (former state legislator, Army veteran) as main challenger
Updated: Sep 10, 2026
Juliana Stratton
(D) - Lt. Governor, won Mar 17 primary with 40.4%
Darren Tracy
(R) - won Mar 17 primary with 40%
Nominees set; primaries held March 17, 2026 (open seat, Durbin retiring)
Updated: Sep 10, 2026
Julia Letlow
(R) - Congresswoman, Trump-endorsed, won Jun 27 runoff 56.9% over John Fleming
Jamie Davis
(D) - Tensas Parish police juror
Nominees set; incumbent Cassidy lost May 16 primary, Letlow won Jun 27 runoff
Updated: Sep 10, 2026
Ed Markey
(D) - Incumbent; won Sep 1 Democratic primary over Rep. Seth Moulton 64.9% to 35.1% (572,595 to 310,365 votes, final count; AP projection called at 8:31 p.m.)
John Deaton
(R) - Won Sep 1 Republican primary over Nathan Bech; November challenger to Markey
Nominees set: Markey won Sep 1 Democratic primary over Moulton 64.9% to 35.1% (572,595 to 310,365 votes, final count; AP called at 8:31 p.m.); Deaton won Sep 1 Republican primary over Bech. General election: Markey vs. Deaton. First debate held Jul 8.
Updated: Sep 10, 2026
Kurt Alme
(R) - Former US Attorney, won Jun 2 primary (76%), Daines-endorsed
Alani Bankhead
(D) - Air Force officer, won Jun 2 primary (43.7%)
Seth Bodnar
(I) - Former University of Montana president
Nominees set; primaries held Jun 2, 2026; Daines withdrew at filing deadline and is not running; both independent Bodnar and Democrat Bankhead confirmed staying through Aug 10 withdrawal deadline, keeping a three-way race. Cook Political Report and Sabato's Crystal Ball confirmed Safe R on Aug 12.
Updated: Sep 10, 2026
Cory Booker
(D) - Incumbent, unopposed in primary
Justin Murphy
(R) - Former Tabernacle deputy mayor, won Jun 2 primary (33.3%)
Nominees set; primaries held Jun 2, 2026
Updated: Sep 10, 2026
Ben Ray Lujan
(D) - Incumbent, won Jun 2 primary
Larry Marker
(R) - Former oil and gas operator, qualified as write-in nominee
Nominees set; primaries held Jun 2, 2026; GOP filer disqualified, Republican qualified via write-in
Updated: Sep 10, 2026
Kevin Hern
(R) - Rep. OK-01, Trump-endorsed, won Jun 16 primary
N'Kiyla Thomas
(D) - Democratic socialist; won Aug 25 runoff 61% over attorney Jim Priest (AP projection)
Nominees set: Hern won GOP primary Jun 16; Thomas won Aug 25 Democratic runoff 61% (77,944 votes) over Jim Priest (49,693 votes, 39%). AP projected Thomas as the winner.
Updated: Sep 10, 2026
Jeff Merkley
(D) - Incumbent, seeking fourth term, won primary 93.2%
David Brock Smith
(R) - State senator, won primary with 29.5%
Nominees set in May 19 primaries
Updated: Sep 10, 2026
Jack Reed
(D) - Incumbent, seeking sixth term; won Sep 9 Democratic primary about 76% over Burbridge (14%) and Munoz (9.8%) on the election-night count (AP projection)
Raymond McKay
(R) - Won Sep 9 Republican primary; general-election challenger to Reed
Nominees set: Reed won Sep 9 Democratic primary with about 76% over Connor Burbridge (14%) and Luis Munoz (9.8%) on the election-night count (AP projection; percentages subject to update as canvassing proceeds); McKay won Republican primary; general election Nov 3
Updated: Sep 10, 2026
Annie Andrews
(D) - Pediatrician, won Jun 9 Dem primary 61.5%
Darline Graham Nordone
(R) - Trump-endorsed appointed interim senator; won Aug 25 runoff over Ralph Norman (AP projection). Led Aug 11 primary 32.7%, Norman 24.6%.
Nominees set: Nordone won Aug 25 Republican runoff over Norman (AP projection); faces Democrat Annie Andrews in November. Seat formerly held by late Sen. Lindsey Graham.
Updated: Sep 10, 2026
Mike Rounds
(R) - Incumbent, seeking third term
Brian Bengs
(I) - Retired military officer; now the only Rounds challenger after Beaudion withdrew Aug 4
Nominees set; Rounds won Jun 2 GOP primary with 75.8%; Democratic nominee Julian Beaudion withdrew Aug 4 citing a house fire and alleged threats; SD Democrats will not name a replacement; race is now Rounds vs. independent Bengs.
Updated: Sep 10, 2026
Bill Hagerty
(R) - Incumbent, ran unopposed in Aug 6 GOP primary; seeks second term
Marquita Bradshaw
(D) - 2020 nominee; won Aug 6 Democratic primary from a five-candidate field
Nominees set: Hagerty ran unopposed for GOP; Bradshaw won Aug 6 Democratic primary from a five-candidate field. Hagerty seeks second term.
Updated: Sep 10, 2026
Mark Warner
(D) - Incumbent, nominee
Bert Mizusawa
(R) - Retired Army major general; won Aug 4 GOP primary with 50.71% over Williams (29.54%) and Farington (19.75%)
Nominees set: Mizusawa won Aug 4 GOP primary 50.71% over Williams (29.54%) and Farington (19.75%); Warner is Democratic nominee
Updated: Sep 10, 2026
Shelley Moore Capito
(R) - Incumbent, won May 12 primary with 66.5%
Rachel Fetty Anderson
(D) - Former Morgantown councilwoman, won May 12 primary with 33.2%
Nominees set; primaries held May 12, 2026
Updated: Sep 10, 2026
Harriet Hageman
(R) - US Rep, Lummis-endorsed; won Aug 18 GOP primary with 64.9% of the final vote over Sam Mead (28.5%) (Wyoming Public Media)
James Byrd
(D) - Won Democratic primary
Nominees set: Hageman won the Aug 18 GOP primary over Sam Mead with 64.9% of the final vote (Sam Mead 28.5%); Byrd won Democratic primary. Open seat, Lummis retiring.
Updated: Sep 10, 2026
Alabama
Tommy Tuberville (R) - Incumbent
Safe R
Alaska
Lisa Murkowski (R) - Incumbent
Likely R
Arkansas
Tom Cotton (R) - Incumbent
Safe R
Colorado
Michael Bennet (D) - Incumbent
Likely D
Delaware
Chris Coons (D) - Incumbent
Safe D
Idaho
Jim Risch (R) - Incumbent
Safe R
Illinois
Dick Durbin (D) - Incumbent
Safe D
Iowa
Joni Ernst (R) - Incumbent
Likely R
Kansas
Roger Marshall (R) - Incumbent
Safe R
Kentucky
Mitch McConnell (R) - Incumbent
Safe R
Louisiana
Bill Cassidy (R) - Incumbent
Safe R
Maine
Susan Collins (R) - Incumbent
Likely R
Massachusetts
Ed Markey (D) - Incumbent
Safe D
Minnesota
Tina Smith (D) - Incumbent
Likely D
Mississippi
Cindy Hyde-Smith (R) - Incumbent
Safe R
Montana
Steve Daines (R) - Incumbent
Safe R
Nebraska
Deb Fischer (R) - Incumbent
Safe R
New Hampshire
Jeanne Shaheen (D) - Incumbent
Likely D
New Jersey
Cory Booker (D) - Incumbent
Safe D
New Mexico
Martin Heinrich (D) - Incumbent
Likely D
North Carolina
Thom Tillis (R) - Incumbent
Likely R
Oklahoma
James Lankford (R) - Incumbent
Safe R
Oregon
Jeff Merkley (D) - Incumbent
Safe D
Rhode Island
Jack Reed (D) - Incumbent
Safe D
South Carolina
Lindsey Graham (R) - Incumbent
Safe R
Tennessee
Marsha Blackburn (R) - Incumbent
Safe R