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Bob Duff (Connecticut)
2005 - Present
2027
20
Bob Duff (Democratic Party) is a member of the Connecticut State Senate, representing District 25. He assumed office in 2005. His current term ends on January 6, 2027.
Duff was born in Norwalk, Connecticut.[1] He received a bachelor's degree in political science from the University of Lynchburg, then Lynchburg College, in 1993.[2][3]
In 1995, he became a real estate agent at William Pitt Real Estate—later William Pitt Sotheby’s International Realty—where he continued to work as of 2025.[2][4]
On January 29, 2002, Duff won the special election to represent District 137 in the Connecticut House of Representatives, defeating Kevin J. Fitzgerald (R) 56%-44%. Later that year, he defeated Friedrich N. Wilms (R) 61%-39% to win a full term in the House.[5]
In 2004, Duff ran for the Connecticut State Senate. He defeated Jeff Konspore (R) 59%-41% in the race for District 25.[6]
Duff was first elected Senate majority leader in 2015.[3]
According to his official biography, as majority leader, Duff was "most proud of his role in 2017 leading the rewrite of the state’s decades-old education funding formula" and considered "instituting one of the largest tax cuts in Connecticut history in 2023 and finally beginning to pay down seven decades of built-up pension debt" as one of the achievements of the Senate Democratic caucus during his tenure.[3]
Duff's 2024 campaign website said, "In the State Senate, I’ve been leading the effort to cut costs and improve quality of life for Connecticut families. ... I look forward to continuing my fight to make healthcare more affordable, improve our schools, and protect a woman’s right to choose."[7]
In August 2025, Duff was elected vice president of the National Conference of State Legislatures. Duff said, "It's not lost on me that this will provide Connecticut with direct connections to some of the best ideas, people and resources in the country. This is great news for Connecticut Senate Democrats, the Connecticut legislature and the 3.6 million people who call Connecticut home."[8]
Biography
Duff earned a bachelor's degree in political science from Lynchburg College in 1993. His professional experience includes working as a substitute teacher for Norwalk Public Schools from 1993 to 1995 and as a realtor for William Pitt Sotheby's International Realty starting in 1995.[2][3]
Committee assignments
Note: This membership information was last updated in September 2023. Ballotpedia completes biannual updates of committee membership. If you would like to send us an update, email us at: editor@ballotpedia.org.
2023-2024
Duff was assigned to the following committees:
- Legislative Management Committee, Vice Chair
2021-2022
Duff was assigned to the following committees:
- Legislative Management Committee, Vice Chair
- Executive and Legislative Nominations Committee, Co-Chair
2019-2020
Duff was assigned to the following committees:
- Legislative Management Committee, Vice Chair
- Executive and Legislative Nominations Committee, Co-Chair
2017 legislative session
At the beginning of the 2017 legislative session, this legislator served on the following committees:
| Connecticut committee assignments, 2017 |
|---|
| • Executive and Legislative Nominations, Co-chair |
| • Legislative Management, Vice chair |
2015 legislative session
At the beginning of the 2015 legislative session, Duff served on the following committees:
| Connecticut committee assignments, 2015 |
|---|
| • Executive and Legislative Nominations, Chair |
| • Legislative Management, Vice chair |
2013-2014
At the beginning of the 2013 legislative session, Duff served on the following committees:
| Connecticut committee assignments, 2013 |
|---|
| • Appropriations |
| • Children, Vice Chair |
| • Energy and Technology, Chair |
| • Regulations Review |
2011-2012
In the 2011-2012 legislative session, Duff served on these committees:
| Connecticut committee assignments, 2011 |
|---|
| • Appropriations |
| • Banks, Co-Chair |
| • Energy and Technology, Vice Chair |
| • Transportation, Vice Chair |
2009-2010
In the 2009-2010 legislative session, Duff served on these committees:
| Connecticut committee assignments, 2009 |
|---|
| • Appropriations |
| • Banks, Co-Chair |
| • Energy and Technology, Vice Chair |
| • Transportation |
Sponsored legislation
The following table lists bills this person sponsored as a legislator, according to BillTrack50 and sorted by action history. Bills are sorted by the date of their last action. The following list may not be comprehensive. To see all bills this legislator sponsored, click on the legislator's name in the title of the table.
Elections
2024
See also: Connecticut State Senate elections, 2024
General election
General election for Connecticut State Senate District 25
Incumbent Bob Duff defeated Martin Tagliaferro in the general election for Connecticut State Senate District 25 on November 5, 2024.
Candidate | % | Votes | ||
| ✔ |  | Bob Duff (D / Working Families Party) | 64.6 | 29,929 |
| Martin Tagliaferro (R) | 35.4 | 16,396 | ||
| Total votes: 46,325 | |||
 = candidate completed the Ballotpedia Candidate Connection survey. | ||||
| If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey. | ||||
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Democratic primary election
The Democratic primary election was canceled. Incumbent Bob Duff advanced from the Democratic primary for Connecticut State Senate District 25.
Republican primary election
The Republican primary election was canceled. Martin Tagliaferro advanced from the Republican primary for Connecticut State Senate District 25.
Endorsements
Ballotpedia did not identify endorsements for Duff in this election.
2022
See also: Connecticut State Senate elections, 2022
General election
General election for Connecticut State Senate District 25
Incumbent Bob Duff defeated Daniel Miressi and Lisa Brinton in the general election for Connecticut State Senate District 25 on November 8, 2022.
Candidate | % | Votes | ||
| ✔ | | Bob Duff (D / Working Families Party) | 60.5 | 19,490 |
 | Daniel Miressi (R) | 34.5 | 11,101 | |
| Lisa Brinton (Independent Party) | 5.0 | 1,604 | ||
| Total votes: 32,195 | |||
| = candidate completed the Ballotpedia Candidate Connection survey. | ||||
| If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey. | ||||
Do you want a spreadsheet of this type of data? Contact our sales team. | ||||
Democratic primary election
The Democratic primary election was canceled. Incumbent Bob Duff advanced from the Democratic primary for Connecticut State Senate District 25.
Republican primary election
The Republican primary election was canceled. Daniel Miressi advanced from the Republican primary for Connecticut State Senate District 25.
2020
See also: Connecticut State Senate elections, 2020
General election
General election for Connecticut State Senate District 25
Incumbent Bob Duff defeated Ellie Kousidis in the general election for Connecticut State Senate District 25 on November 3, 2020.
Candidate | % | Votes | ||
| ✔ | | Bob Duff (D / Working Families Party) | 60.2 | 30,708 |
 | Ellie Kousidis (R / Independent Party) | 39.8 | 20,278 | |
| Total votes: 50,986 | |||
| = candidate completed the Ballotpedia Candidate Connection survey. | ||||
| If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey. | ||||
Do you want a spreadsheet of this type of data? Contact our sales team. | ||||
Democratic primary election
The Democratic primary election was canceled. Incumbent Bob Duff advanced from the Democratic primary for Connecticut State Senate District 25.
Republican primary election
The Republican primary election was canceled. Ellie Kousidis advanced from the Republican primary for Connecticut State Senate District 25.
2018
- See also: Connecticut State Senate elections, 2018
In addition to running as a Democratic Party candidate, Duff cross-filed to also run with the Working Families Party in 2018.[9]
General election
General election for Connecticut State Senate District 25
Incumbent Bob Duff defeated Marc D'Amelio in the general election for Connecticut State Senate District 25 on November 6, 2018.
Candidate | % | Votes | ||
| ✔ | | Bob Duff (D) | 63.2 | 24,444 |
 | Marc D'Amelio (R) | 36.8 | 14,261 | |
| Total votes: 38,705 | |||
| = candidate completed the Ballotpedia Candidate Connection survey. | ||||
| If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey. | ||||
Do you want a spreadsheet of this type of data? Contact our sales team. | ||||
2016
- See also: Connecticut State Senate elections, 2016
Elections for the Connecticut State Senate took place in 2016. The primary election took place on August 9, 2016, and the general election was held on November 8, 2016. The candidate filing deadline was June 7, 2016.
Incumbent Bob Duff defeated Gregory Ehlers in the Connecticut State Senate District 25 general election.[10]
| Connecticut State Senate, District 25 General Election, 2016 | ||||
|---|---|---|---|---|
| Party | Candidate | Vote % | Votes | |
| Democratic |  Bob Duff Incumbent |
58.94% | 26,509 | |
| Republican | Gregory Ehlers | 41.06% | 18,470 | |
| Total Votes | 44,979 | |||
| Source: Connecticut Secretary of the State | ||||
Incumbent Bob Duff ran unopposed in the Connecticut State Senate District 25 Democratic primary.
| Connecticut State Senate, District 25 Democratic Primary, 2016 | ||
|---|---|---|
| Party | Candidate | |
| Democratic | Bob Duff Incumbent (unopposed) | |
Gregory Ehlers ran unopposed in the Connecticut State Senate District 25 Republican primary.
| Connecticut State Senate, District 25 Republican Primary, 2016 | ||
|---|---|---|
| Party | Candidate | |
| Republican | Gregory Ehlers (unopposed) | |
2014
- See also: Connecticut State Senate elections, 2014
Elections for the Connecticut State Senate consisted of a primary election on August 12, 2014, and a general election on November 4, 2014. The signature filing deadline for candidates wishing to run in this election was June 10, 2014. Incumbent Bob Duff was unopposed in the Democratic primary, while Bill Dunne was unopposed in the Republican primary. Duff defeated Dunne in the general election.[11][12]
| Party | Candidate | Vote % | Votes | |
|---|---|---|---|---|
| Democratic | Bob Duff Incumbent |
61.7% | 16,310 | |
| Republican | Bill Dunne | 38.3% | 10,127 | |
| Total Votes | 26,437 | |||
2012
- See also: Connecticut State Senate elections, 2012
Duff ran in the 2012 election for Connecticut State Senate District 25. Duff ran unopposed in the Democratic primary on August 14, 2012. He defeated Jack Chiaramonte (R) in the general election on November 6, 2012.[13][14][15]
| Party | Candidate | Vote % | Votes | |
|---|---|---|---|---|
| Democratic | Bob Duff Incumbent |
66.9% | 27,015 | |
| Republican | Jack Chiaramonte | 33.1% | 13,351 | |
| Total Votes | 40,366 | |||
2010
- See also: Connecticut State Senate elections, 2010
Duff ran for re-election to the 25th District seat in 2010. He had no primary opposition. He defeated Artie Kassimis (R) in the November 2 general election.
| Connecticut State Senate, District 25 General Election (2010) | ||||
|---|---|---|---|---|
| Candidates | Votes | |||
| Bob Duff (D)
|
18,767 | |||
| Artie Kassimis (R) | 10,358 | |||
2008
- See also: Connecticut State Senate elections, 2008
On November 4, 2008, Duff won re-election to the 25th District Seat in the Connecticut State Senate, defeating Steve Papadakos (R).[16]
| Connecticut State Senate, District 25 (2008) | ||||
|---|---|---|---|---|
| Candidates | Votes | |||
| Bob Duff (D)
|
26,820 | |||
| Steve Papadakos (R) | 12,473 | |||
Campaign themes
2024
Ballotpedia survey responses
See also: Ballotpedia's Candidate Connection
Bob Duff did not complete Ballotpedia's 2024 Candidate Connection survey.
2022
Bob Duff did not complete Ballotpedia's 2022 Candidate Connection survey.
2020
Bob Duff did not complete Ballotpedia's 2020 Candidate Connection survey.
Campaign finance summary
Note: The finance data shown here comes from the disclosures required of candidates and parties. Depending on the election or state, this may represent only a portion of all the funds spent on their behalf. Satellite spending groups may or may not have expended funds related to the candidate or politician on whose page you are reading this disclaimer. Campaign finance data from elections may be incomplete. For elections to federal offices, complete data can be found at the FEC website. Click here for more on federal campaign finance law and here for more on state campaign finance law.
Scorecards
A scorecard evaluates a legislator’s voting record. Its purpose is to inform voters about the legislator’s political positions. Because scorecards have varying purposes and methodologies, each report should be considered on its own merits. For example, an advocacy group’s scorecard may assess a legislator’s voting record on one issue while a state newspaper’s scorecard may evaluate the voting record in its entirety.
Ballotpedia is in the process of developing an encyclopedic list of published scorecards. Some states have a limited number of available scorecards or scorecards produced only by select groups. It is Ballotpedia’s goal to incorporate all available scorecards regardless of ideology or number.
Click here for an overview of legislative scorecards in all 50 states. To contribute to the list of Connecticut scorecards, email suggestions to editor@ballotpedia.org.
2024
| To view all the scorecards we found for this legislator in 2024, click [show]. |
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In 2024, the Connecticut State Legislature was in session from February 7 to May 8.
|
2023
| To view all the scorecards we found for this legislator in 2023, click [show]. |
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In 2023, the Connecticut State Legislature was in session from January 4 to June 7.
|
2022
| To view all the scorecards we found for this legislator in 2022, click [show]. |
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|
In 2022, the Connecticut State Legislature was in session from February 9 to May 4.
|
2021
| To view all the scorecards we found for this legislator in 2021, click [show]. |
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In 2021, the Connecticut State Legislature was in session from January 6 to June 9.
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2020
| To view all the scorecards we found for this legislator in 2020, click [show]. |
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In 2020, the Connecticut State Legislature was in session from February 5 to May 6. The legislature held a special session from July 21 to July 27.
|
2019
| To view all the scorecards we found for this legislator in 2019, click [show]. |
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In 2019, the Connecticut General Assembly was in session from January 9 through June 5.
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2018
| To view all the scorecards we found for this legislator in 2018, click [show]. |
|---|
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In 2018, the Connecticut General Assembly was in session from February 7 to May 9.
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2017
| To view all the scorecards we found for this legislator in 2017, click [show]. |
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In 2017, the Connecticut General Assembly was in session from January 4 through June 7. The legislature held a veto session on July 24. The legislature held its first special session on July 31. The legislature held its second special session from September 14 to September 16. The legislature held another special session on October 3. State lawmakers held their fourth special session from October 25 to October 26. The legislature met again in special session from November 14 to November 15.
|
2016
| To view all the scorecards we found for this legislator in 2016, click [show]. |
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In 2016, the Connecticut General Assembly was in session from February 3 through May 4. The Legislature held a special session from May 12-13 to pass the state budget.
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2015
| To view all the scorecards we found for this legislator in 2015, click [show]. |
|---|
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In 2015, the Connecticut General Assembly was in session from January 7 through June 3.
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2014
| To view all the scorecards we found for this legislator in 2014, click [show]. |
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In 2014, the Connecticut General Assembly was in session from February 5 to May 7.
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2013
| To view all the scorecards we found for this legislator in 2013, click [show]. |
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In 2013, the Connecticut General Assembly was in session from January 9 to June 5. Ballotpedia staff did not find any state legislative scorecards published for this state in 2013. If you are aware of one, please contact editor@ballotpedia.org to let us know. |
2012
| To view all the scorecards we found for this legislator in 2012, click [show]. |
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In 2012, the Connecticut General Assembly was in session from February 8 to May 9.
|
See also
2024 Elections
External links
|
Candidate Connecticut State Senate District 25 |
Officeholder Connecticut State Senate District 25 |
Personal |
Footnotes
- ↑ The Darien Times, "State Sen. Bob Duff (D-25)," October 28, 2010
- ↑ 2.0 2.1 2.2 LinkedIn, "Bob Duff," accessed April 24, 2025
- ↑ 3.0 3.1 3.2 3.3 Connecticut Senate Democrats, "Senate Majority Leader Bob Duff," accessed April 24, 2025
- ↑ William Pitt Sotheby's International Realty, "Bob Duff," accessed April 24, 2025
- ↑ CT.gov Office of the Secretary of the State, "Election Results Archive," accessed April 24, 2025 (2002 results)
- ↑ CT.gov Office of the Secretary of the State, "Election Results Archive," accessed April 24, 2025 (2004 results)
- ↑ Bob Duff 2024 campaign website, "Home," accessed April 24, 2025
- ↑ CT Insider, "Connecticut Senate majority leader elected vice president of National Council of State Legislatures," August 19, 2025
- ↑ Connecticut Secretary of State, "2018 List of Candidates," accessed October 29, 2018
- ↑ Connecticut Secretary of the State, "Election Night Reporting, 2016 General Election," accessed December 14, 2016
- ↑ Connecticut Secretary of State, "Official candidate list," accessed July 15, 2014
- ↑ Connecticut Secretary of State, "Official primary and general election results," accessed November 26, 2014
- ↑ Connecticut Secretary of State, "Candidate List," accessed June 18, 2012
- ↑ Connecticut Secretary of State, "Official Primary Results for 2012," August 14, 2012
- ↑ Connecticut Secretary of State, "Election Results 2012" accessed November 17, 2012
- ↑ Connecticut Secretary of State, "2008 General Election Results," November 4, 2008
| Political offices | ||
|---|---|---|
| Preceded by - |
Connecticut State Senate District 25 2005-Present |
Succeeded by - |
| Preceded by - |
Connecticut House of Representatives District 25 2002-2005 |
Succeeded by - |
