CalledUnofficial results
Connecticut Senate District 19
Connecticut State Senate · Connecticut
Catherine Osten won re-election by 20.7 points over Jason Guidone.
Fusion voting
Catherine OstenDemocrat · winner · incumbent
60.3%22,943
Jason GuidoneRepublican
39.7%15,077
38,020 votes
Source: Connecticut Secretary of the State unofficial resultsUpdated Nov 7, 2026, 12:54 PM ET
Where the race moved
Against the 2024 presidential vote
The seat's recent races
Source: Past results: 99chambers results archive (MEDSL, Klarner, state election offices)
Money in this race
Each line compares the two campaigns on one scale.
Catherine OstenJason Guidone
$153.8K
Raised by the campaign
$206.4K
$131.2K
Public matching funds
$185.2K
$148.5K
Spent by the campaign
$151.7K
$5.3K
Cash on hand
$54.6K
Campaign money: Connecticut State Elections Enforcement Commission, through Oct 27, 2026.
Source: Connecticut State Elections Enforcement Commission campaign filingsUpdated Oct 27, 2026
Pre-election forecast (final, Nov 3)
Our model's last run before Election Day, Nov 3, 2026. It no longer updates.
- Catherine Osten
- 98%
- Jason Guidone
- 2%
- Projected margin
- D+15.3