Ohio's 1st congressional district
Ohio's 1st congressional district is represented by Democrat Greg Landsman. The district includes the city of Cincinnati, all of Warren County and borders the state of Kentucky. This district was once represented by President William Henry Harrison. After redistricting in 2010, the district was widely seen as heavily gerrymandered by state Republicans to protect the incumbent, Steve Chabot. Chabot lost the seat in 2022 to Landsman, after redistricting unified the city of Cincinnati into the district. The city was previously split between the 1st and 2nd districts.
The district is somewhat more Democratic than its predecessor even though it includes heavily Republican Warren County. Previous iterations of the district did not include Warren County. However, Hamilton County has double Warren County's population, creating a marginally Democratic seat.
Demographics
According to the APM Research Lab's Voter Profile Tools, the district contained about 551,000 potential voters. Of these, 74% are White and 21% are Black. Immigrants make up 4% of the district's potential voters. Median income among households in the district is about $64,000, while 11% of households live below the poverty line. 8% of those 25 and older have not earned a high school degree, while 34% hold a bachelor's or higher degree.Composition
For the 118th and successive Congresses, the district contains all or portions of the following counties, townships, and municipalities:Hamilton County
Warren County ''''''
Recent election results
| Year | Democratic | Republican | Other |
| 1920 | John H. Allen: 40,195 | √ Nicholas Longworth : 57,328 | Eli G. Frankenstein: 1,134 Edward L. Hutchins : 926 |
| 1922 | Sidney G. Stricker: 30,945 | √ Nicholas Longworth : 45,253 | Edward L. Hutchins : 3,094 |
| 1924 | Thomas B. Paxton: 36,065 | √ Nicholas Longworth : 58,125 | |
| 1926 | John C. Rogers: 26,511 | √ Nicholas Longworth : 45,317 | Edward D. Colley: 268 |
| 1928 | Arthur Espy: 49,880 | √ Nicholas Longworth : 80,812 | |
| 1930 | John W. Pattison: 46,974 | √ Nicholas Longworth : 50,481 | |
| 1932 | Edward H. Brink: 55,416 | √ John B. Hollister : 66,018 | |
| 1934 | Edwin G. Becker: 42,723 | √ John B. Hollister : 53,985 | |
| 1936 | √ Joseph A. Dixon: 71,935 | John B. Hollister : 66,082 | |
| 1938 | Joseph A. Dixon : 45,536 | √ Charles H. Elston: 63,285 | |
| 1940 | Joseph A. Dixon: 61,382 | √ Charles H. Elston : 84,622 | |
| 1942 | William H. Hessler: 33,884 | √ Charles H. Elston : 54,120 | |
| 1944 | Frank J. Richter: 62,617 | √ Charles H. Elston : 82,373 | |
| 1946 | G. Andrews Espy: 40,594 | √ Charles H. Elston : 72,909 | |
| 1948 | Morse Johnson: 69,240 | √ Charles H. Elston : 73,952 | |
| 1950 | Rollin H. Everett: 53,760 | √ Charles H. Elston : 77,507 | |
| 1952 | Walter A. Kelly: 60,015 | √ Gordon H. Scherer: 96,385 | |
| 1954 | Mrs. Warwick B. Hobart: 39,421 | √ Gordon H. Scherer : 71,042 | |
| 1956 | Leonard D. Slutz: 49,701 | √ Gordon H. Scherer : 91,181 | |
| 1958 | W. Ted Osborne: 54,119 | √ Gordon H. Scherer : 70,686 | |
| 1960 | W. Ted Osborne: 62,043 | √ Gordon H. Scherer : 88,899 | |
| 1962 | Monica Nolan: 44,264 | √ Carl W. Rich: 74,320 | |
| 1964 | √ John J. Gilligan: 74,525 | Carl W. Rich : 69,114 | |
| 1966 | John J. Gilligan : 62,580 | √ Robert Taft Jr.: 70,366 | |
| 1968 | Carl F. Heiser: 49,830 | √ Robert Taft Jr. : 102,219 | |
| 1970 | Bailey W. Turner: 39,820 | √ William J. Keating: 89,169 | |
| 1972 | Carl F. Heiser: 50,575 | √ William J. Keating : 119,469 | |
| 1974 | Thomas A. Luken : 67,685 | √ Willis D. Gradison Jr.: 70,284 | |
| 1976 | William F. Bowen: 56,995 | √ Willis D. Gradison Jr. : 109,789 | Christopher L. Martinson: 2,732 |
| 1978 | Timothy M. Burke: 38,669 | √ Willis D. Gradison Jr. : 73,593 | Joseph E. May: 1,907 |
| 1980 | Donald J. Zwick: 38,529 | √ Willis D. Gradison Jr. : 124,080 | Scott A. Breen: 3,571 |
| 1982 | √ Thomas A. Luken : 99,143 | John E. Held: 52,658 | Jim Berms : 4,386 |
| 1984 | √ Thomas A. Luken : 121,577 | Norman A. Murdock: 88,859 | Other: 10,222 |
| 1986 | √ Thomas A. Luken : 90,477 | Fred E. Morr: 56,100 | |
| 1988 | √ Thomas A. Luken : 117,628 | Steve Chabot: 90,738 | |
| 1990 | √ Charles J. Luken: 83,932 | Ken Blackwell: 80,362 | |
| 1992 | √ David S. Mann: 120,190 | Stephen Grote: 101,498 | Jim Berns: 12,734 |
| 1994 | David S. Mann : 72,822 | √ Steve Chabot: 92,997 | |
| 1996 | Mark P. Longabaugh: 94,719 | √ Steve Chabot : 118,324 | John G. Halley : 5,381 |
| 1998 | Roxanne Qualls: 82,003 | √ Steve Chabot : 92,421 | |
| 2000 | John Cranley: 98,328 | √ Steve Chabot : 116,768 | David A. Groshoff : 3,399 Richard L. Stevenson : 1,933 |
| 2002 | Greg Harris: 60,168 | √ Steve Chabot : 110,760 | |
| 2004 | Greg Harris: 116,320 | √ Steve Chabot : 167,991 | |
| 2006 | John Cranley: 90,963 | √ Steve Chabot : 101,838 | |
| 2008 | √ Steve Driehaus: 155,089 | Steve Chabot : 140,469 | Eric Wilson: 84 Rich Stevenson: 67 |
| 2010 | Steve Driehaus : 92,672 | √ Steve Chabot: 103,770 | Jim Berns: 3,076 Rich Stevenson: 2,000 |
| 2012 | Jeff Sinnard: 131,490 | √ Steve Chabot : 201,907 | Jim Berns : 9,674 Rich Stevenson : 6,654 |
| 2014 | Fred Kundrata: 72,604 | √ Steve Chabot : 124,779 | |
| 2016 | Michele Young: 144,644 | √ Steve Chabot : 210,014 | |
| 2018 | Aftab Pureval: 141,118 | √ Steve Chabot : 154,409 | Dirk Kubala : 5,339 |
| 2020 | Kate Schroder: 172,022 | √ Steve Chabot : 199,560 | Kevin David Kahn: 13,692 |
| 2022 | √ Greg Landsman: 156,416 | Steve Chabot : 140,058 | - |
| 2024 | √ Greg Landsman : 213,916 | Orlando Sonza: 177,993 |