The one hundred thirty-eighth Connecticut House of Representatives district elects one member of the Connecticut House of Representatives. Its current representative is Ken Gucker.
| Representative | Party | Years | District home | Note |
|---|---|---|---|---|
| Terry McGovern | Democratic | 1967–1971 | Bridgeport | |
| Ernest Nickols | Republican | 1971–1973 | Bridgeport | Redistricted to the 130th District |
| E. Ronald Bard | Republican | 1973–1975 | Norwalk | Redistricted from the 145th District |
| Lawrence Anastasia | Democratic | 1975 – 1993 | Norwalk | In 1992, Larry Anastasia's residence was redistricted such that he and fellow incumbent Democrat Alex Knopp were both in the 139th. |
| Mark Nielsen | Republican | 1993 – 1995 | Danbury | |
| David Cappiello | Republican | 1995 – 1999 | Danbury | |
| Mark Boughton | Republican | 1999 – 2002 | Danbury | Elected Mayor of Danbury in 2001 |
| Grace M. Scire | Democratic | 2002 – 2003 | Danbury | |
| Janice Giegler | Republican | 2003 – 2017 | Danbury | |
| Michael Ferguson | Republican | 2017 – 2019 | Danbury | |
| Ken Gucker | Democratic | 2019 – 2023 | Danbury | Lost reelection. [1] |
| Rachel Chaleski | Republican | 2023 – 2025 | Danbury | |
| Ken Gucker | Democratic | 2025 – present | Danbury |
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Kenneth Gucker (incumbent) | 3,322 | 49.81 | |
| Republican | Rachel Chaleski | 3,219 | 48.26 | |
| Independent Party | Rachel Chaleski | 129 | 1.93 | |
| Total votes | 6,670 | 100.00 | ||
| Republican gain from Democratic | ||||
| Party | Candidate | Votes | % | |
|---|---|---|---|---|
| Democratic | Kenneth Gucker (incumbent) | 6,530 | 51.48 | |
| Republican | Emile Buzaid | 5,582 | 44.00 | |
| Working Families | Kenneth Gucker (incumbent) | 302 | 2.38 | |
| Independent Party | Emile Buzaid | 271 | 2.14 | |
| Total votes | 12,685 | 100.00 | ||
| Democratic hold | ||||
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