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U.S. Senate · Massachusetts · Nov 3 · 7 days out
Massachusetts Senate
Ed Markey (Democrat, incumbent) against John Deaton (Republican).
Also running
Where they stand · 56 points apart
EstimatesHollow dots are read from each campaign’s own words; nobody here has a voting record yet. Biggest gaps first.
Ed MarkeyestimateJohn Deatonestimate
Money
FEC to Sep 30RaisedMarkey$5.8MDeaton$1.6MItemized, named donorsMarkey$1.7MDeaton$459kNamed donorsMarkey2,308Deaton439Itemized from MassachusettsMarkey54%Deaton35%
The FEC doesn't name donors who give under $200, so their gifts count in Raised but not Itemized.
All market contracts · Kalshi and Polymarket · 4
| Candidate | Platform | Contract | Bid | Ask | Last | Volume | |
|---|---|---|---|---|---|---|---|
| Ed Markey | Kalshi | Democrat wins | 98% | 98% | 98% | $38,977 | Open ↗ |
| Ed Markey | Polymarket | Democrat wins | 98% | 99% | 99% | $38,916 | Open ↗ |
| John Deaton | Kalshi | Republican wins | 2% | 2% | 2% | $73,164 | Open ↗ |
| John Deaton | Polymarket | Republican wins | 1% | 2% | 2% | $13,925 | Open ↗ |
Prices in cents on the dollar, read Oct 27, 2026. A party contract pays if that party wins the seat.
Also on the Massachusetts ballot
All 10 →Statement estimate · odds are a market close, not a poll