The 2026 Massachusetts Senate race: Ed Markey vs. Seth Moulton

Gone quiet · last story Sep 4

What this arc covers

The 2026 Democratic primary for Massachusetts's U.S. Senate seat between Sen. Ed Markey and Rep. Seth Moulton: the party convention, the debates, and Markey's primary win.

Massachusetts

Earliest story we hold May 30, 2026 · 7 stories · 55 independent sources (counted once each) · 97 days

Part ofEd MarkeySeth MoultonMassachusettsUnited States SenateDemocratic PartyAlexandria Ocasio-CortezMedicare

Part of The 2026 Senate races

  1. The 2026 Iowa Senate race: Josh Turek vs. Ashley HinsonAug 29, 2025 – Sep 23, 2026
  2. The 2026 Wyoming Senate race to succeed Cynthia LummisDec 19, 2025 – Aug 19, 2026
  3. The 2026 Alaska Senate race: Dan Sullivan vs. Mary PeltolaJan 12 – Sep 24, 2026
  4. The 2026 Louisiana Senate race: Bill Cassidy's primary defeatJan 18 – Jun 27, 2026
  5. The 2026 Texas Senate race: James Talarico vs. Ken PaxtonApr 28 – Sep 25, 2026
  6. The 2026 Massachusetts Senate race: Ed Markey vs. Seth MoultonThis arcMay 30 – Sep 4, 2026
  7. The 2026 Kansas Senate race: Roger Marshall vs. Adam HamiltonAug 5 – Sep 28, 2026
  8. The 2026 South Carolina Senate race: Darline Graham vs. Annie AndrewsSep 11 – Sep 27, 2026
Show remaining 11 arcs
  1. The 2026 Maine Senate race: Troy Jackson vs. Susan CollinsNov 14, 2024 – Sep 27, 2026
  2. The 2026 Ohio Senate race: Jon Husted vs. Sherrod BrownJan 15, 2025 – Sep 27, 2026
  3. The 2026 Florida Senate race: Ashley Moody vs. Angie NixonJan 16, 2025 – Sep 19, 2026
  4. The 2026 Kentucky Senate race to succeed Mitch McConnellFeb 20, 2025 – Jan 19, 2026
  5. The 2026 New Hampshire Senate race: Chris Pappas vs. John E. SununuMar 12, 2025 – Sep 9, 2026
  6. The 2026 Michigan Senate race: Abdul El-Sayed vs. Mike RogersApr 14, 2025 – Sep 23, 2026
  7. The 2026 Illinois Senate race to succeed Dick DurbinApr 23, 2025 – Mar 18, 2026
  8. The 2026 Minnesota Senate race: Peggy Flanagan vs. Michele TafoyaApr 29, 2025 – Aug 12, 2026
  9. The 2026 Georgia Senate race: Jon Ossoff vs. Mike CollinsMay 5, 2025 – Sep 29, 2026
  10. The 2026 Nebraska Senate race: Pete Ricketts vs. Dan OsbornJul 8, 2025 – Sep 16, 2026
  11. The 2026 North Carolina Senate race: Roy Cooper vs. Michael WhatleyJul 24, 2025 – Sep 28, 2026

Where it standsnewest first · each bar runs left to right by leaning

Sep 4Two Dems clashed on trans athletes. What does Markey's primary win reveal?5 articles · 1 independent sources
1 left, 1 center, 1 right
Aug 29– Sep 2Senator Ed Markey wins Massachusetts Democratic primary108 articles · 57 independent sources
15 left, 24 center, 9 right
Aug 20– 21Watch live: Ed Markey and Seth Moulton debate for final time before Democratic Senate primary6 articles · 3 independent sources
2 left, 1 center, 0 right

Who covered it, over timeindependent sources per week, by side

May 25Jun 15Jul 6Jul 20Aug 10Aug 31

LeftCenterRight

Point at or tap a week to see its count by side.

Every week as a table
Week ofLeftCenterRightArticles
May 25, 20261215
Jul 6, 20261419
Aug 3, 20264206
Aug 17, 202622211
Aug 24, 20261218
Aug 31, 202616239101

Stories before June 28, 2026 come from archived pages, so who covered them is limited to the outlets we recovered for that period.

33% left · 45% center · 22% right of 55 independent sources among the outlets we track, across 7 stories.

Every storyoldest first

  1. May 2026

    May 30Markey wins Massachusetts Democrats’ endorsement as Moulton clears ballot hurdle in Senate race5 articles · 5 independent sources
    1 left, 2 center, 1 right

  2. July 2026

    Jul 7– 9First U.S. Senate debate between Markey and Moulton: Here are five takeaways9 articles · 6 independent sources
    1 left, 4 center, 1 right

  3. August 2026

    Aug 3– 4Moulton and Markey spar in Democratic primary debate6 articles · 6 independent sources
    4 left, 2 center, 0 right
  4. Aug 20– 21AOC endorses Markey in Senate primary5 articles · 5 independent sources
    1 left, 2 center, 2 right
  5. Aug 20– 21Watch live: Ed Markey and Seth Moulton debate for final time before Democratic Senate primary6 articles · 3 independent sources
    2 left, 1 center, 0 right
  6. Aug 29– Sep 2Senator Ed Markey wins Massachusetts Democratic primary108 articles · 57 independent sources
    15 left, 24 center, 9 right

  7. September 2026

    Sep 4Two Dems clashed on trans athletes. What does Markey's primary win reveal?5 articles · 1 independent sources
    1 left, 1 center, 1 right