Who is Ed Markey and what is Markey running on in the 2026 Massachusetts Senate race?
Ed Markey (D) is the heavy favorite in the 2026 Massachusetts Senate race, with about a 98% chance of winning, according to Kalshi and Polymarket on Sept 28.
Answer from Mary's digital twin. Checkmark turns Green once she confirms it.
Ed Markey is the Democratic candidate for Massachusetts U.S. Senate, and the incumbent. U.S. Senator since 2013 after decades in the U.S. House; at about 80, he beat Rep. Seth Moulton’s generational-change primary challenge. Election Day is Tuesday, November 3, 2026.
The race
Chance of winning: Kalshi and Polymarket, Sept 28
- The seat: Incumbent Ed Markey (D) seeking a 3rd full term; beat Rep. Seth Moulton 64.7 to 35.0 in the Sept 1, 2026 primary.
- Rating: Solid D (Cook, Sabato, DDHQ, RCP, 2026).
- Polling: Markey 51.4, Deaton 31.1 (polling aggregate, Aug 2026).
Why Markey is ahead
- Massachusetts is deeply Democratic; Republicans have not won a Senate seat there since 2010.
- Markey leads by about 20 points in August polling.
- Deaton lost to Elizabeth Warren by nearly 20 points in 2024.
- Markey is tying Deaton to Trump and ‘MAGA’.
What Markey is running on
- Healthcare. Supports Medicare for All.
- Climate. Champions the Green New Deal.
- Taxes. Wants to tax millionaires and billionaires.
- Trump. Running against Trump and ‘MAGA Republicans’.
In Markey’s own words
“I ran on Medicare for all, I ran on the Green New Deal, I ran on taxing millionaires and billionaires.”
“Massachusetts does not want to have a MAGA Republican representing them in the Senate.”
The other candidates
Every race
See every Senate and governor race on the ballot, with each candidate’s chance of winning: the 2026 midterms at a glance.
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