What You Need to Know
• Voters in Massachusetts will participate in a primary election on September 1, 2026.
• The key Senate race features Democratic incumbent Senator Ed Markey facing challenger U.S. Representative Seth Moulton.
• Voters will also decide Democratic primaries in the 6th and 8th Congressional Districts, along with other state races.
Voters in the U.S. state of Massachusetts will head to the polls on September 1, 2026, for a primary election that includes a significant United States Senate race between Democratic incumbent Senator Edward Markey and U.S. Representative Seth Moulton. This election highlights a division within the Democratic Party, as Moulton is affiliated with the moderate New Democrat Coalition, while Markey represents the progressive faction. In addition to the Senate race, voters will also select nominees in competitive Democratic primaries for the 6th and 8th Congressional Districts, as well as positions for the governor, state legislature, and district attorney. Polls will open at 7 a.m. ET and close at 8 p.m. ET on election day.
Why It Matters
The Massachusetts primary is significant as it showcases the ongoing ideological battle within the Democratic Party between progressives and moderates. Senator Edward Markey, a long-time progressive advocate, is defending his seat against a challenger from within his own party, U.S. Representative Seth Moulton, who represents a more centrist approach. Additionally, the outcomes of the Congressional District primaries could impact the Democratic Party’s strategy and representation in the state. Historical voting patterns in Massachusetts and the candidates’ fundraising efforts will play critical roles in determining the election’s results.
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