Bob Duff
Connecticut State Senator, District 25 since 2004. Re-elected in 2026. Next on the ballot in 2028.
- In office
- 22 yrs
- Since 2004
- Bills became law
- 8
- 58 sponsored, 2025–2026 session
- Votes missed
- 0.2%
- Chamber median 1.5%
- With party
- 100%
- On votes splitting the parties
- Last margin
- +36.2
- Won 2026
- Next election
- 2028
- Nov 7, 2028
Source: Wikidata, congress-legislators and Open States; 99chambers legislative recordsUpdated Oct 27, 2026, 1:52 PM ET
Committees
As of 2026-10.
- Executive and Legislative Nominations · co-chair
- Legislative Management · vice chair
Source: Open States committeesUpdated Oct 27, 2026, 9:43 AM ET
Legislation
Child abuse and neglect reports of cases · Became law May 2026
Boards of education · Became law May 2026
AIDS (Disease) · Became law May 2026
Source: Open States billsUpdated Nov 6, 2026, 4:22 PM ET
Voting record
Where Duff sits in the Connecticut State Senate
Duff is closer to the center than 20% of the chamber's Democrats.
Closest: Gary Winfield, Martin Looney, James Maroney
Source: 99chambers roll-call scalingUpdated Nov 6, 2026, 4:47 PM ET
With Duff’s party
- Votes with the chamber's Democrats100%
Black tick: the average of Democrats in the Connecticut State Senate.
Source: 99chambers legislative scores from roll calls and cosponsorships
Key votes
Votes chosen for their effect, not their side: Duff’s vote, each party’s majority, and the result. An orange vote differs from most Democrats.
| Date | Bill | Duff | Dem. majority | Rep. majority | Result |
|---|---|---|---|---|---|
| May 6, 2026 | SB 477: AN ACT CONCERNING THE FAILURE TO FILE FOR CERTAIN GRAND LIST EXEMPTIONS, A MUNICIPAL… | Yes | Yes | No | Passed 26–9 |
| May 6, 2026 | HB 5340: AN ACT CONCERNING RENEWABLE POWER GENERATION. | Yes | Yes | No | Passed 27–9 |
| May 5, 2026 | HB 5581: AN ACT AMENDING A PRIOR CONVEYANCE OF A PARCEL OF STATE LAND TO THE TOWN OF ROCKY HILL. | Yes | Yes | No | Passed 27–9 |
| May 4, 2026 | HB 5468: AN ACT CONCERNING THE PROVISION OF PARENT-MANAGED LEARNING. | Yes | Yes | No | Passed 22–14 |
| May 2, 2026 | SB 1: AN ACT MAKING ADJUSTMENTS TO THE STATE BUDGET FOR THE BIENNIUM ENDING JUNE 30, 2027, MAKING… | Yes | Yes | No | Passed 30–6 |
Source: 99chambers key votes from Congress.gov, Voteview and Open States roll calls
Career
Offices held, and every time Duff was on a ballot. Filled marks are general elections won; hollow marks are primaries; an orange outline is a loss.
Source: 99chambers results archive (MEDSL, Klarner, state election offices)
Elections
Margin against the seat’s presidential baseline: how the seat voted for president in the same or nearest year.
| Year | Race | Result | Margin | Seat | +/− |
|---|---|---|---|---|---|
| 2026 | Connecticut Senate District 25 | Won | D+36.2 | D+28.3 | +7.9 |
| 2024 | Connecticut State Senate, District 25 | Won | D+29.2 | — | — |
| 2022 | Connecticut State Senate, District 25 | Won | D+26.1 | — | — |
| 2020 | Connecticut State Senate, District 25 | Won | D+20.5 | — | — |
| 2018 | Connecticut State Senate, District 25 | Won | D+26.3 | — | — |
| 2016 | Connecticut State Senate, District 25 | Won | D+20.3 | — | — |
| 2014 | Connecticut State Senate, District 25 | Won | D+23.4 | — | — |
| 2014 | Connecticut State Senate, District 25 (primary) | Won | — | — | — |
| 2012 | Connecticut State Senate, District 25 | Won | D+33.9 | — | — |
| 2010 | Connecticut State Senate, District 25 | Won | D+28.9 | — | — |
| 2008 | Connecticut State Senate, District 25 | Won | D+39.6 | — | — |
| 2006 | Connecticut State Senate, District 25 | Won | D+31.4 | — | — |
| 2004 | Connecticut State Senate, District 25 | Won | D+17.8 | — | — |
| 2002 | Connecticut House of Representatives, District 137 | Won | D+22.4 | — | — |
Source: 99chambers results archive; 2026: Connecticut Secretary of the State (unofficial)Updated Nov 8, 2026, 7:01 PM ET
Campaign money, 2025–26
- Raised
- $154.6K
- Spent
- $145.4K
- Cash
- $9.3K
Source: Connecticut State Elections Enforcement Commission filings through Oct 27, 2026Updated Nov 7, 2026, 1:51 PM ET
Campaign committees
Open committees can still raise and spend money.
| Friends of Bob Duff State | Active |
Source: Connecticut State Elections Enforcement Commission filings through Oct 27, 2026Updated Nov 7, 2026, 1:51 PM ET
Seats Duff has held
- Connecticut State Senate, District 25 · since 2004
- Connecticut House of Representatives, District 137 · 2002–2004
Source: 99chambers results archive
Who Duff has run against
- Justin Perry (R) · 2026 general, won
- Martin Tagliaferro (R) · 2024 election, won
- Daniel Miressi (R) · 2022 election, won
- Ellie Kousidis (R) · 2020 election, won
- Marc Damelio (R) · 2018 election, won
- Gregory Ehlers (R) · 2016 election, won
Source: 99chambers results archive; 2026: Connecticut Secretary of the State (unofficial)
How we know Duff
One person, matched across every source we use.
- Open States ocd-person/7836916c-08a2-430a-99eb-580f7cf50e81
- Wikidata Q16213499
Source: Identity links: Wikidata, congress-legislators, Open States, FECUpdated Oct 27, 2026, 1:52 PM ET