# Kentucky's 4th Senate district

Kentucky's 4th Senatorial district is one of 38 districts in the Kentucky Senate. Located in western Kentucky, it comprises the counties of Henderson, Hopkins, Union, and Webster. It has been represented by Robby Mills (R–Henderson) since 2019. As of 2023, the district had a population of 115,888.
From 1942 to 1945, the district was represented by Earle Clements, who would later be elected governor and U.S. senator from Kentucky. From 1894 to 1897, the district was represented by William J. Deboe, who was elected U.S. senator from Kentucky in 1897.

## Voter registration

On January 1, 2025, the district had 88,529 registered voters, who were registered with the following parties.
| Party | Party | Registration | Registration |
| Party | Party | Voters | % |
| | Democratic | 43,765 | 49.44 |
| | Republican | 36,884 | 41.66 |
| | Independent | 3,054 | 3.45 |
| | Libertarian | 336 | 0.38 |
| | Constitution | 53 | 0.06 |
| | Green | 44 | 0.05 |
| | Socialist Workers | 9 | 0.01 |
| | Reform | 6 | 0.01 |
| | "Other" | 4,378 | 4.95 |
| Total | Total | 88,529 | 100.00 |
| Source: Kentucky State Board of Elections ||||

## Election results from statewide races
### 2002 – 2012

| Year | Office | Results |
| 2002 | Senator | McConnell 62.0 - 38.0% |
| 2002 | Amendment 1 | 77.3 - 22.7% |
| 2002 | Amendment 2 | 64.4 - 35.6% |
| 2003 | Governor | Chandler 51.6 - 48.4% |
| 2003 | Secretary of State | Maple 60.2 - 39.8% |
| 2003 | Attorney General | Stumbo 61.5 - 35.3% |
| 2003 | Auditor of Public Accounts | Luallen 57.9 - 42.1% |
| 2003 | State Treasurer | Miller 64.0 - 36.0% |
| 2003 | Commissioner of Agriculture | Baesler 52.9 - 47.1% |
| 2004 | President | Bush 58.7 - 40.7% |
| 2004 | Senator | Mongiardo 51.7 - 48.3% |
| 2004 | Amendment 1 | 82.4 - 17.6% |
| 2007 | Governor | Beshear 66.1 - 33.9% |
| 2007 | Secretary of State | Hendrickson 56.3 - 43.7% |
| 2007 | Attorney General | Conway 73.0 - 27.0% |
| 2007 | Auditor of Public Accounts | Luallen 65.7 - 34.3% |
| 2007 | State Treasurer | Hollenbach 64.4 - 35.6% |
| 2007 | Commissioner of Agriculture | Farmer 52.8 - 47.2% |
| 2008 | President | McCain 54.2 - 44.0% |
| 2008 | Senator | Lunsford 52.4 - 47.6% |
| 2010 | Senator | Paul 52.2 - 47.8% |
| 2011 | Governor | Beshear 64.5 - 31.4% |
| 2011 | Secretary of State | Grimes 63.1 - 36.9% |
| 2011 | Attorney General | Conway 54.5 - 45.5% |
| 2011 | Auditor of Public Accounts | Edelen 57.6 - 42.4% |
| 2011 | State Treasurer | Hollenbach 58.3 - 38.5% |
| 2011 | Commissioner of Agriculture | Comer 59.7 - 40.3% |
| 2012 | President | Romney 62.5 - 36.0% |
| 2012 | Amendment 1 | 88.3 - 11.7% |

### 2014 – 2020

| Year | Office | Results |
| 2014 | Senator | McConnell 58.2 - 38.7% |
| 2015 | Governor | Bevin 52.4 - 44.9% |
| 2015 | Secretary of State | Grimes 52.9 - 47.1% |
| 2015 | Attorney General | Beshear 53.9 - 46.1% |
| 2015 | Auditor of Public Accounts | Harmon 52.4 - 47.6% |
| 2015 | State Treasurer | Ball 56.8 - 43.2% |
| 2015 | Commissioner of Agriculture | Quarles 58.1 - 41.9% |
| 2016 | President | Trump 70.3 - 26.0% |
| 2016 | Senator | Paul 61.1 - 38.9% |
| 2019 | Governor | Bevin 55.5 - 42.6% |
| 2019 | Secretary of State | Adams 59.4 - 40.6% |
| 2019 | Attorney General | Cameron 62.5 - 37.5% |
| 2019 | Auditor of Public Accounts | Harmon 60.2 - 36.8% |
| 2019 | State Treasurer | Ball 64.1 - 35.9% |
| 2019 | Commissioner of Agriculture | Quarles 62.3 - 35.4% |
| 2020 | President | Trump 70.6 - 28.0% |
| 2020 | Senator | McConnell 63.9 - 31.3% |
| 2020 | Amendment 1 | 59.9 - 40.1% |
| 2020 | Amendment 2 | 68.4 - 31.6% |

### 2022 – present

| Year | Office | Results |
| 2022 | Senator | Paul 69.2 - 30.8% |
| 2022 | Amendment 1 | 51.9 - 48.1% |
| 2022 | Amendment 2 | 53.6 - 46.4% |
| 2023 | Governor | Cameron 51.0 - 49.0% |
| 2023 | Secretary of State | Adams 63.3 - 36.7% |
| 2023 | Attorney General | Coleman 63.1 - 36.9% |
| 2023 | Auditor of Public Accounts | Ball 63.2 - 36.8% |
| 2023 | State Treasurer | Metcalf 62.3 - 37.7% |
| 2023 | Commissioner of Agriculture | Shell 64.7 - 35.3% |
| 2024 | President | Trump 71.5 - 27.3% |
| 2024 | Amendment 1 | 64.4 - 35.6% |
| 2024 | Amendment 2 | 65.5 - 34.5% |

## List of members representing the district

| Member | Party | Years | Electoral history | District location |
| William Sullivan (Henderson) | Democratic | January 1, 1966 – January 1, 1982 | Elected in 1965. Reelected in 1969. Reelected in 1973. Reelected in 1977. Retired. | 1964–1972 |
| William Sullivan (Henderson) | Democratic | January 1, 1966 – January 1, 1982 | Elected in 1965. Reelected in 1969. Reelected in 1973. Reelected in 1977. Retired. | 1972–1974 |
| William Sullivan (Henderson) | Democratic | January 1, 1966 – January 1, 1982 | Elected in 1965. Reelected in 1969. Reelected in 1973. Reelected in 1977. Retired. | 1974–1984 |
| Henry G. Lackey (Henderson) | Democratic | January 1, 1982 – January 1, 1987 | Elected in 1981. Lost renomination. | 1974–1984 |
| Henry G. Lackey (Henderson) | Democratic | January 1, 1982 – January 1, 1987 | Elected in 1981. Lost renomination. | 1984–1993 Crittenden, Henderson, Livingston, Lyon, Union, and Webster Counties. |
| John Hall (Henderson) | Democratic | January 1, 1987 – January 1, 1991 | Elected in 1986. Lost renomination. | 1984–1993 Crittenden, Henderson, Livingston, Lyon, Union, and Webster Counties. |
| Henry G. Lackey (Henderson) | Democratic | January 1, 1991 – January 1, 1995 | Elected in 1990. Retired to run for Kentucky's 1st congressional district. | 1984–1993 Crittenden, Henderson, Livingston, Lyon, Union, and Webster Counties. |
| Henry G. Lackey (Henderson) | Democratic | January 1, 1991 – January 1, 1995 | Elected in 1990. Retired to run for Kentucky's 1st congressional district. | 1993–1997 |
| Paul Herron (Henderson) | Democratic | January 1, 1995 – June 16, 2004 | Elected in 1994. Reelected in 1998. Reelected in 2002. Died. | 1993–1997 |
| Paul Herron (Henderson) | Democratic | January 1, 1995 – June 16, 2004 | Elected in 1994. Reelected in 1998. Reelected in 2002. Died. | 1997–2003 |
| Paul Herron (Henderson) | Democratic | January 1, 1995 – June 16, 2004 | Elected in 1994. Reelected in 1998. Reelected in 2002. Died. | 2003–2015 |
| Dorsey Ridley (Henderson) | Democratic | July 2004 – January 1, 2019 | Elected to finish Herron's term. Reelected in 2006. Reelected in 2010. Reelected in 2014. Lost reelection. | 2003–2015 |
| Dorsey Ridley (Henderson) | Democratic | July 2004 – January 1, 2019 | Elected to finish Herron's term. Reelected in 2006. Reelected in 2010. Reelected in 2014. Lost reelection. | 2015–2023 |
| Robby Mills (Henderson) | Republican | January 1, 2019 – present | Elected in 2018. Reelected in 2022. | 2015–2023 |
| Robby Mills (Henderson) | Republican | January 1, 2019 – present | Elected in 2018. Reelected in 2022. | 2023–present |