Jahana Hayes wins in >99 of 100 simulations.
There are no qualifying public polls yet, so the forecast leans on fundamentals; partisan lean, the national environment and incumbency point to Jahana Hayes +19.9.
Every simulated outcome, grouped in 2-point steps. Projected margin Hayes +19.9; 80 in 100 fall between Hayes +12.7 and Hayes +27.2.
Jahana Hayes is an American politician serving as the U.S. representative for Connecticut's 5th congressional district since 2019. The district, once represented by U.S. Senator Chris Murphy, comprises much of the state's northwestern portion, including New Britain, Danbury, and Waterbury. Wikipedia
Ballot list and short bios from Wikipedia (CC BY-SA); websites from Wikidata; fundraising from the FEC (cycle-to-date, latest report).
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No public polls have tested Jahana Hayes against Chris Shea yet.
No polls of this matchup yet, so there is no polling average. The forecast relies on fundamentals.
How this race’s odds have moved as polls and the national environment changed.
Out of 100. Today: Hayes >99, Shea <1.
The model blends each estimate by how much to trust it right now. Polls get 0% of the weight, 15 days out.
| Polling average (after adjustments) | — | no polls |
| Partisan lean (Cook PVI, 2026 lines) | D+3.0 | roughly 6 points of margin vs. the nation |
| National environment | D+9.6 | generic ballot + presidential approval |
| Incumbent’s track record | Shea +0.8 | In 2024 they ran 1.6 pts more Republican than the state’s lean predicted; half carries over (max 10) |
| Incumbency | Hayes +3.6 | incumbent’s side |
| Fundamentals estimate | Hayes +19.9 | ±6 typical error |
| Expert ratings (average) | — | used only in the “+ Expert ratings” version |
| Forecast | Hayes +19.9 | ±5.7 standard deviation, including 2.3 for movement before Election Day |
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