
In 2026
The upcoming November 3, 2026, election will determine the U.S. Senator representing Massachusetts for the term beginning in 2027, featuring incumbent Democrat Ed Markey seeking re-election against Democratic challenger Seth Moulton and Republican John Deaton.
The race is primarily contested between two-term Democratic Senator Ed Markey (age 80 on Election Day) and Representative Seth Moulton (age 48), with John Deaton leading the Republican effort.
WikipediaWikipediaMassachusetts has not elected a Republican to the U.S. Senate since 2010, and the state is consistently rated as "Safe Democratic" with a partisan lean of D+14.
uspollingdata.comWikipediaA Democratic victory maintains the current party control of Massachusetts' federal representation, while a Republican win would break a 16-year streak of Democratic Senate representation in the state.
uspollingdata.comNote: The market resolves based on the party of the Senator sworn in for the 2027 term; if a Democrat wins the November 2026 election, the market resolves to "Democratic party."
Representative Seth Moulton officially launched his campaign challenging incumbent Senator Ed Markey for the Democratic nomination in the 2026 U.S. Senate race.
NBC NewsA Suffolk University and Boston Globe poll shows incumbent Ed Markey leading the Democratic primary with 45% support against Seth Moulton at 22%, with 30% of voters undecided.
msn.comRepublican candidate John Deaton, who previously ran against Elizabeth Warren in 2024, is campaigning for the Republican nomination to face the eventual Democratic winner.
WikipediaDemocratic and Republican primary elections will be held to determine the final nominees for the general election.
WikipediaBallotpediaThe general election for the U.S. Senate seat in Massachusetts will take place, with results determining the winner for the 2027–2033 term.
WikipediaBallotpediaAI-generated briefing. AI can make mistakes. This is not financial advice.
Incumbent Ed Markey holds a significant lead in Democratic primary polling, with 45% support compared to Seth Moulton's 22% in the latest Suffolk University/Boston Globe survey.
msn.comMassachusetts is rated "Safe Democratic" by polling data analysts, and the state has not elected a Republican senator since Scott Brown's 2010 victory, which was reversed in 2012.
uspollingdata.comMarkey secured 66.2% of the vote in his 2020 re-election and maintains a strong base despite his age, with early polling showing him leading hypothetical matchups against Deaton by over 20 points.
youtube.comWikipediaAI-generated briefing. AI can make mistakes. This is not financial advice.
Challenger Seth Moulton has criticized Markey for running at age 80, arguing that a younger candidate (Moulton is 48) better represents the state's future, which could mobilize voters dissatisfied with the incumbent's age.
WikipediaPolling indicates a large portion of Democratic primary voters (30%) remain undecided, and analyst Paleologos noted that undecided voters might advantage Moulton in a crowded field.
msn.comSpeculation exists that Ayanna Pressley may enter the race, and a poll showing her potential entry splits the primary vote significantly, with her at 35%, Markey at 34%, and Moulton at 16%, potentially weakening the eventual Democratic nominee.
AI-generated briefing. AI can make mistakes. This is not financial advice.