# Maryland's 1st congressional district

Maryland's 1st congressional district encompasses the entire Eastern Shore of Maryland, including Salisbury, as well as Harford County and parts of Baltimore County; it is the largest congressional district in the state geographically, covering 11 counties (in whole or part).
The district is currently represented by Republican Andy Harris, who defeated Democratic incumbent Frank M. Kratovil Jr. in 2010. The district was the subject of a 2014 boycott following legislation Harris introduced nullifying a District of Columbia law de-criminalizing possession of marijuana. With a Cook Partisan Voting Index rating of R+11, it is the only Republican district in Maryland.

## Recent election results from statewide races

| Year | Office | Results |
| 2008 | President | McCain 57% – 41% |
| 2012 | President | Romney 59% – 41% |
| 2012 | Senate | Bongino 40% – 37% |
| 2014 | Governor | Hogan 75% – 25% |
| 2016 | President | Trump 59% – 36% |
| 2016 | Senate | Szeliga 60% – 37% |
| 2018 | Senate | Campbell 52% – 42% |
| 2018 | Governor | Hogan 77% – 22% |
| 2018 | Attorney General | Wolf 59% – 41% |
| 2020 | President | Trump 56% – 41% |
| 2022 | Senate | Chaffee 57% – 43% |
| 2022 | Governor | Cox 54% – 42% |
| 2022 | Attorney General | Peroutka 58% – 42% |
| 2022 | Comptroller | Glassman 62% – 38% |
| 2024 | President | Trump 57% – 40% |
| 2024 | Senate | Hogan 65% – 31% |

## Composition

For the 118th and successive Congresses (based on redistricting following the 2020 census), the district contains all or portions of the following counties and communities:
Baltimore County (6)
    Hampton (part; also 2nd), Honeygo, Kingsville, Middle River (part; also 2nd), Perry Hall (part; also 2nd), White Marsh (part; also 2nd)
Caroline County (13)
    All 13 communities
Cecil County (8)
    All 8 communities
Dorchester County (14)
    All 14 communities
Harford County (16)
    All 16 communities
Kent County (13)
    All 13 communities
Queen Anne's County (13)
    All 13 communities
Somerset County (11)
    All 11 communities
Talbot County (7)
    All 7 communities
Wicomico County (19)
    All 19 communities
Worcester County (11)
    All 11 communities

## List of members representing the district

| # | Member (residence) | Party | Years | Con- gress | Electoral history | Location |
| District created March 4, 1789 |||||||
| 1 | Michael J. Stone (Haberdeventure) | Anti-Administration | March 4, 1789 – March 3, 1791 | 1st | Elected in 1789. Lost re-election. | 1789–1833 Calvert, Charles, and St. Mary's counties in Southern Maryland. |
| 2 | Philip Key (St. Mary's County) | Pro-Administration | March 4, 1791 – March 3, 1793 | 2nd | Elected in 1790. Lost re-election. | 1789–1833 Calvert, Charles, and St. Mary's counties in Southern Maryland. |
| 3 | George Dent (Charles County) | Pro-Administration | March 4, 1793 – March 3, 1795 | 3rd 4th 5th 6th | Elected in 1792. Re-elected in 1794. Re-elected in 1796. Re-elected in 1798. Retired. | 1789–1833 Calvert, Charles, and St. Mary's counties in Southern Maryland. |
| 3 | George Dent (Charles County) | Federalist | March 4, 1795 – March 3, 1801 | 3rd 4th 5th 6th | Elected in 1792. Re-elected in 1794. Re-elected in 1796. Re-elected in 1798. Retired. | 1789–1833 Calvert, Charles, and St. Mary's counties in Southern Maryland. |
| 4 | John Campbell (Port Tobacco) | Federalist | March 4, 1801 – March 3, 1811 | 7th 8th 9th 10th 11th | Elected in 1801. Re-elected in 1803. Re-elected in 1804. Re-elected in 1806. Re-elected in 1808. Retired. | 1789–1833 Calvert, Charles, and St. Mary's counties in Southern Maryland. |
| 5 | Philip Stuart (Port Tobacco) | Federalist | March 4, 1811 – March 3, 1819 | 12th 13th 14th 15th | Elected in 1810. Elected in 1812. Re-elected in 1814. Re-elected in 1816. Retired. | 1789–1833 Calvert, Charles, and St. Mary's counties in Southern Maryland. |
| 6 | Raphael Neale (Leonardtown) | Federalist | March 4, 1819 – March 3, 1825 | 16th 17th 18th | Elected in 1818. Re-elected in 1820. Re-elected in 1822. Lost re-election. | 1789–1833 Calvert, Charles, and St. Mary's counties in Southern Maryland. |
| 7 | Clement Dorsey (Chaptico) | Anti-Jacksonian | March 4, 1825 – March 3, 1831 | 19th 20th 21st | Elected in 1824. Re-elected in 1826. Re-elected in 1829. Retired. | 1789–1833 Calvert, Charles, and St. Mary's counties in Southern Maryland. |
| 8 | Daniel Jenifer (Allens Fresh) | Anti-Jacksonian | March 4, 1831 – March 3, 1833 | 22nd | Elected in 1831. [data missing] | 1789–1833 Calvert, Charles, and St. Mary's counties in Southern Maryland. |
| 9 | Littleton Purnell Dennis (Princess Anne) | Anti-Jacksonian | March 4, 1833 – April 14, 1834 | 23rd | Elected in 1833. Died. | 1833–1843 Dorchester, Somerset, and Worcester counties on the Eastern Shore of Maryland |
| Vacant | Vacant | Vacant | April 14, 1834 – May 29, 1834 | 23rd | | 1833–1843 Dorchester, Somerset, and Worcester counties on the Eastern Shore of Maryland |
| 10 | John N. Steele (Vienna) | Anti-Jacksonian | May 29, 1834 – March 3, 1837 | 23rd 24th | Elected to finish Dennis's term. Re-elected in 1835. [data missing] | 1833–1843 Dorchester, Somerset, and Worcester counties on the Eastern Shore of Maryland |
| 11 | John Dennis (Princess Anne) | Whig | March 4, 1837 – March 3, 1841 | 25th 26th | Elected in 1837. Re-elected in 1839. [data missing] | 1833–1843 Dorchester, Somerset, and Worcester counties on the Eastern Shore of Maryland |
| 12 | Isaac D. Jones (Princess Anne) | Whig | March 4, 1841 – March 3, 1843 | 27th | Elected in 1841. [data missing] | 1833–1843 Dorchester, Somerset, and Worcester counties on the Eastern Shore of Maryland |
| 13 | John Causin (Leonardtown) | Whig | March 4, 1843 – March 3, 1845 | 28th | Elected late in 1844. [data missing] | 1843–1853 Anne Arundel (except for Howard District), Calvert, Charles, Montgomery, Prince George's, and St. Mary's counties in Central Maryland and Southern Maryland. |
| 14 | John G. Chapman (Port Tobacco) | Whig | March 4, 1845 – March 3, 1849 | 29th 30th | Elected in 1845. Re-elected in 1847. [data missing] | 1843–1853 Anne Arundel (except for Howard District), Calvert, Charles, Montgomery, Prince George's, and St. Mary's counties in Central Maryland and Southern Maryland. |
| 15 | Richard Bowie (Rockville) | Whig | March 4, 1849 – March 3, 1853 | 31st 32nd | Elected in 1849. Re-elected in 1851. [data missing] | 1843–1853 Anne Arundel (except for Howard District), Calvert, Charles, Montgomery, Prince George's, and St. Mary's counties in Central Maryland and Southern Maryland. |
| 16 | John R. Franklin (Snow Hill) | Whig | March 4, 1853 – March 3, 1855 | 33rd | Elected in 1853. [data missing] | 1853–1863 Caroline, Dorchester, Queen Anne's, Somerset, Talbot, and Worcester counties on the Eastern Shore of Maryland. |
| 17 | James A. Stewart (Cambridge) | Democratic | March 4, 1855 – March 3, 1861 | 34th 35th 36th | Elected in 1855. Re-elected in 1857. Re-elected in 1859. [data missing] | 1853–1863 Caroline, Dorchester, Queen Anne's, Somerset, Talbot, and Worcester counties on the Eastern Shore of Maryland. |
| 18 | John W. Crisfield (Princess Anne) | Union | March 4, 1861 – March 3, 1863 | 37th | Elected in 1861. [data missing] | 1853–1863 Caroline, Dorchester, Queen Anne's, Somerset, Talbot, and Worcester counties on the Eastern Shore of Maryland. |
| 19 | John A. J. Creswell (Elkton) | Unconditional Union | March 4, 1863 – March 3, 1865 | 38th | Elected in 1863. Lost re-election. | 1863–1873 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, and Worcester counties on the Eastern Shore of Maryland. |
| 20 | Hiram McCullough (Elkton) | Democratic | March 4, 1865 – March 3, 1869 | 39th 40th | Elected in 1864. Re-elected in 1866. [data missing] | 1863–1873 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, and Worcester counties on the Eastern Shore of Maryland. |
| 21 | Samuel Hambleton (Easton) | Democratic | March 4, 1869 – March 3, 1873 | 41st 42nd | Elected in 1868. Re-elected in 1870. [data missing] | 1863–1873 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, and Worcester counties on the Eastern Shore of Maryland. |
| 22 | Ephraim King Wilson II (Snow Hill) | Democratic | March 4, 1873 – March 3, 1875 | 43rd | Elected in 1872. [data missing] | 1873–1883 Caroline, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland. |
| 23 | Philip Thomas (Easton) | Democratic | March 4, 1875 – March 3, 1877 | 44th | Elected in 1874. [data missing] | 1873–1883 Caroline, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland. |
| 24 | Daniel M. Henry (Cambridge) | Democratic | March 4, 1877 – March 3, 1881 | 45th 46th | Elected in 1876. Re-elected in 1878. [data missing] | 1873–1883 Caroline, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland. |
| 25 | George W. Covington (Snow Hill) | Democratic | March 4, 1881 – March 3, 1885 | 47th 48th | Elected in 1880. Re-elected in 1882. Retired. | 1873–1883 Caroline, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland. |
| 25 | George W. Covington (Snow Hill) | Democratic | March 4, 1881 – March 3, 1885 | 47th 48th | Elected in 1880. Re-elected in 1882. Retired. | 1883–1893 [data missing] |
| 26 | Charles H. Gibson (Easton) | Democratic | March 4, 1885 – March 3, 1891 | 49th 50th 51st | Elected in 1884. Re-elected in 1886. Re-elected in 1888. Retired. | 1883–1893 [data missing] |
| 27 | Henry Page (Princess Anne) | Democratic | March 4, 1891 – September 3, 1892 | 52nd | Elected in 1890. Resigned to become a judge of the Maryland Court of Appeals. | 1883–1893 [data missing] |
| Vacant | Vacant | Vacant | September 3, 1892 – November 8, 1892 | 52nd | | 1883–1893 [data missing] |
| 28 | John B. Brown (Centerville) | Democratic | November 8, 1892 – March 3, 1893 | 52nd | Elected to finish Page's term. Retired. | 1883–1893 [data missing] |
| 29 | Robert Brattan (Princess Anne) | Democratic | March 4, 1893 – May 10, 1894 | 53rd | Elected in 1892. Died. | 1893–1903 [data missing] |
| Vacant | Vacant | Vacant | May 10, 1894 – November 6, 1894 | 53rd | | 1893–1903 [data missing] |
| 30 | Winder Laird Henry (Cambridge) | Democratic | November 6, 1894 – March 3, 1895 | 53rd | Elected to finish Brattan's term. Retired. | 1893–1903 [data missing] |
| 31 | Joshua W. Miles (Princess Anne) | Democratic | March 4, 1895 – March 3, 1897 | 54th | Elected in 1894. Lost re-election. | 1893–1903 [data missing] |
| 32 | Isaac A. Barber (Easton) | Republican | March 4, 1897 – March 3, 1899 | 55th | Elected in 1896. [data missing] | 1893–1903 [data missing] |
| 33 | John Walter Smith (Snow Hill | Democratic | March 4, 1899 – January 12, 1900 | 56th | Elected in 1898. Resigned to become Governor of Maryland. | 1893–1903 [data missing] |
| Vacant | Vacant | Vacant | January 12, 1900 – November 6, 1900 | 56th | | 1893–1903 [data missing] |
| 34 | Josiah L. Kerr (Cambridge) | Republican | November 6, 1900 – March 3, 1901 | 56th | Elected to finish Smith's term. Retired. | 1893–1903 [data missing] |
| 35 | William Humphreys Jackson (Salisbury) | Republican | March 4, 1901 – March 3, 1905 | 57th 58th | Elected in 1900. Re-elected in 1902. Lost re-election. | 1893–1903 [data missing] |
| 35 | William Humphreys Jackson (Salisbury) | Republican | March 4, 1901 – March 3, 1905 | 57th 58th | Elected in 1900. Re-elected in 1902. Lost re-election. | 1903–1913 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland. |
| 36 | Thomas A. Smith (Ridgely) | Democratic | March 4, 1905 – March 3, 1907 | 59th | Elected in 1904. Lost re-election. | 1903–1913 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland. |
| 37 | William Humphreys Jackson (Salisbury) | Republican | March 4, 1907 – March 3, 1909 | 60th | Elected in 1906. Lost re-election. | 1903–1913 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland. |
| 38 | J. Harry Covington (Easton) | Democratic | March 4, 1909 – September 30, 1914 | 61st 62nd 63rd | Elected in 1908. Re-elected in 1910. Re-elected in 1912. Resigned to practice law in Washington, D.C. | 1903–1913 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland. |
| 38 | J. Harry Covington (Easton) | Democratic | March 4, 1909 – September 30, 1914 | 61st 62nd 63rd | Elected in 1908. Re-elected in 1910. Re-elected in 1912. Resigned to practice law in Washington, D.C. | 1913–1933 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland. |
| Vacant | Vacant | Vacant | September 30, 1914 – November 3, 1914 | 63rd | | 1913–1933 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland. |
| 39 | Jesse Price (Salisbury) | Democratic | November 3, 1914 – March 3, 1919 | 63rd 64th 65th | Elected to finish Covington's term. Re-elected in 1914. Re-elected in 1916. Lost re-election. | 1913–1933 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland. |
| 40 | William N. Andrews (Cambridge) | Republican | March 4, 1919 – March 3, 1921 | 66th | Elected in 1918. Lost re-election. | 1913–1933 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland. |
| 41 | Thomas Alan Goldsborough (Denton) | Democratic | March 4, 1921 – April 5, 1939 | 67th 68th 69th 70th 71st 72nd 73rd 74th 75th 76th | Elected in 1920. Re-elected in 1922. Re-elected in 1924. Re-elected in 1926. Re-elected in 1928. Re-elected in 1930. Re-elected in 1932. Re-elected in 1934. Re-elected in 1936. Re-elected in 1938. Resigned to become associate justice of the District Court of the United States for the District of Columbia. | 1913–1933 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland. |
| 41 | Thomas Alan Goldsborough (Denton) | Democratic | March 4, 1921 – April 5, 1939 | 67th 68th 69th 70th 71st 72nd 73rd 74th 75th 76th | Elected in 1920. Re-elected in 1922. Re-elected in 1924. Re-elected in 1926. Re-elected in 1928. Re-elected in 1930. Re-elected in 1932. Re-elected in 1934. Re-elected in 1936. Re-elected in 1938. Resigned to become associate justice of the District Court of the United States for the District of Columbia. | 1933–1943 [data missing] |
| Vacant | Vacant | Vacant | April 5, 1939 – June 8, 1939 | 76th | | 1933–1943 [data missing] |
| 42 | David Jenkins Ward (Salisbury) | Democratic | June 8, 1939 – January 3, 1945 | 76th 77th 78th | Elected to finish Goldsborough's term. Re-elected in 1940. Re-elected in 1942. Lost re-election. | 1933–1943 [data missing] |
| 42 | David Jenkins Ward (Salisbury) | Democratic | June 8, 1939 – January 3, 1945 | 76th 77th 78th | Elected to finish Goldsborough's term. Re-elected in 1940. Re-elected in 1942. Lost re-election. | 1943–1953 [data missing] |
| 43 | Dudley Roe (Sudlersville) | Democratic | January 3, 1945 – January 3, 1947 | 79th | Elected in 1944. Lost re-election. | 1943–1953 [data missing] |
| 44 | Edward T. Miller (Easton) | Republican | January 3, 1947 – January 3, 1959 | 80th 81st 82nd 83rd 84th 85th | Elected in 1946. Re-elected in 1948. Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-elected in 1956. Lost re-election. | 1943–1953 [data missing] |
| 44 | Edward T. Miller (Easton) | Republican | January 3, 1947 – January 3, 1959 | 80th 81st 82nd 83rd 84th 85th | Elected in 1946. Re-elected in 1948. Re-elected in 1950. Re-elected in 1952. Re-elected in 1954. Re-elected in 1956. Lost re-election. | 1953–1963 [data missing] |
| 45 | Thomas F. Johnson (Berlin) | Democratic | January 3, 1959 – January 3, 1963 | 86th 87th | Elected in 1958. Re-elected in 1960. Lost re-election. | 1953–1963 [data missing] |
| 46 | Rogers Morton (Easton) | Republican | January 3, 1963 – January 29, 1971 | 88th 89th 90th 91st 92nd | Elected in 1962. Re-elected in 1964. Re-elected in 1966. Re-elected in 1968. Re-elected in 1970. Resigned to become U.S. Secretary of the Interior. | 1963–1973 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland, and parts of Baltimore County in Central Maryland. |
| Vacant | Vacant | Vacant | January 29, 1971 – May 25, 1971 | 92nd | | 1963–1973 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland, and parts of Baltimore County in Central Maryland. |
| 47 | William O. Mills (Easton) | Republican | May 25, 1971 – May 24, 1973 | 92nd 93rd | Elected to finish Morton's term. Re-elected in 1972. Died by suicide. | 1963–1973 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland, and parts of Baltimore County in Central Maryland. |
| 47 | William O. Mills (Easton) | Republican | May 25, 1971 – May 24, 1973 | 92nd 93rd | Elected to finish Morton's term. Re-elected in 1972. Died by suicide. | 1973–1983 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland, and Anne Arundel, Calvert, Charles, and St. Mary's counties in Southern Maryland and parts of Baltimore County, Harford County and Baltimore City in Central Maryland. |
| Vacant | Vacant | Vacant | May 24, 1973 – August 21, 1973 | 93rd | | 1973–1983 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland, and Anne Arundel, Calvert, Charles, and St. Mary's counties in Southern Maryland and parts of Baltimore County, Harford County and Baltimore City in Central Maryland. |
| 48 | Robert Bauman (Easton) | Republican | August 21, 1973 – January 3, 1981 | 93rd 94th 95th 96th | Elected to finish Mills's term. Re-elected in 1974. Re-elected in 1976. Re-elected in 1978. Lost re-election. | 1973–1983 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland, and Anne Arundel, Calvert, Charles, and St. Mary's counties in Southern Maryland and parts of Baltimore County, Harford County and Baltimore City in Central Maryland. |
| 49 | Roy Dyson (Great Mills) | Democratic | January 3, 1981 – January 3, 1991 | 97th 98th 99th 100th 101st | Elected in 1980. Re-elected in 1982. Re-elected in 1984. Re-elected in 1986. Re-elected in 1988. Lost re-election. | 1973–1983 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland, and Anne Arundel, Calvert, Charles, and St. Mary's counties in Southern Maryland and parts of Baltimore County, Harford County and Baltimore City in Central Maryland. |
| 49 | Roy Dyson (Great Mills) | Democratic | January 3, 1981 – January 3, 1991 | 97th 98th 99th 100th 101st | Elected in 1980. Re-elected in 1982. Re-elected in 1984. Re-elected in 1986. Re-elected in 1988. Lost re-election. | 1983–1993 [data missing] |
| 50 | Wayne Gilchrest (Kennedyville) | Republican | January 3, 1991 – January 3, 2009 | 102nd 103rd 104th 105th 106th 107th 108th 109th 110th | Elected in 1990. Re-elected in 1992. Re-elected in 1994. Re-elected in 1996. Re-elected in 1998. Re-elected in 2000. Re-elected in 2002. Re-elected in 2004. Re-elected in 2006. Lost renomination. | 1983–1993 [data missing] |
| 50 | Wayne Gilchrest (Kennedyville) | Republican | January 3, 1991 – January 3, 2009 | 102nd 103rd 104th 105th 106th 107th 108th 109th 110th | Elected in 1990. Re-elected in 1992. Re-elected in 1994. Re-elected in 1996. Re-elected in 1998. Re-elected in 2000. Re-elected in 2002. Re-elected in 2004. Re-elected in 2006. Lost renomination. | 1993–2003 [data missing] |
| 50 | Wayne Gilchrest (Kennedyville) | Republican | January 3, 1991 – January 3, 2009 | 102nd 103rd 104th 105th 106th 107th 108th 109th 110th | Elected in 1990. Re-elected in 1992. Re-elected in 1994. Re-elected in 1996. Re-elected in 1998. Re-elected in 2000. Re-elected in 2002. Re-elected in 2004. Re-elected in 2006. Lost renomination. | 2003–2013 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland, and parts of Anne Arundel County in Southern Maryland and Baltimore County in Central Maryland. |
| 51 | Frank Kratovil (Stevensville) | Democratic | January 3, 2009 – January 3, 2011 | 111th | Elected in 2008. Lost re-election. | 2003–2013 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland, and parts of Anne Arundel County in Southern Maryland and Baltimore County in Central Maryland. |
| 52 | Andy Harris (Cambridge) | Republican | January 3, 2011 – present | 112th 113th 114th 115th 116th 117th 118th 119th | Elected in 2010. Re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Re-elected in 2018. Re-elected in 2020. Re-elected in 2022. Re-elected in 2024. | 2003–2013 Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset, Talbot, Wicomico, and Worcester counties on the Eastern Shore of Maryland, and parts of Anne Arundel County in Southern Maryland and Baltimore County in Central Maryland. |
| 52 | Andy Harris (Cambridge) | Republican | January 3, 2011 – present | 112th 113th 114th 115th 116th 117th 118th 119th | Elected in 2010. Re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Re-elected in 2018. Re-elected in 2020. Re-elected in 2022. Re-elected in 2024. | 2013–2023 |
| 52 | Andy Harris (Cambridge) | Republican | January 3, 2011 – present | 112th 113th 114th 115th 116th 117th 118th 119th | Elected in 2010. Re-elected in 2012. Re-elected in 2014. Re-elected in 2016. Re-elected in 2018. Re-elected in 2020. Re-elected in 2022. Re-elected in 2024. | 2023–present |

## Recent election results
### 2000s

2000 Maryland's 1st congressional district election :
| Party | Party | Candidate | Votes | % |
| | Republican | Wayne Gilchrest (Incumbent) | 165,293 | 64.40% |
| | Democratic | Bennett Bozman | 91,022 | 35.46% |
| | Green | David M. Gross | 73 | 0.03% |
| | N/A | Write-ins | 294 | 0.11% |
| Total votes | Total votes | Total votes | 256,682 | 100.00% |
| | Republican hold | Republican hold | Republican hold | Republican hold |
2002 Maryland's 1st congressional district election :
| Party | Party | Candidate | Votes | % |
| | Republican | Wayne Gilchrest (Incumbent) | 192,004 | 76.83% |
| | Democratic | Amy D. Tamlyn | 57,986 | 23.20% |
| Total votes | Total votes | Total votes | 249,900 | 100.00% |
| | Republican hold | Republican hold | Republican hold | Republican hold |
2004 Maryland's 1st congressional district election :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Wayne Gilchrest (Incumbent) | 245,149 | 75.89% | −0.94% |
| | Democratic | Kostas Alexakis | 77,872 | 24.11% | +0.91% |
| Total votes | Total votes | Total votes | 323,021 | 100.00% | ? |
| | Republican hold | Republican hold | Swing | [?] | |
2006 Maryland's 1st congressional district election :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Wayne Gilchrest (Incumbent) | 185,177 | 68.80% | −7.09% |
| | Democratic | Jim Corwin | 83,738 | 31.11% | +7.00% |
| | Write-ins | | 232 | 0.09% | +0.09% |
| Total votes | Total votes | Total votes | 269,147 | 100.00% | ? |
| | Republican hold | Republican hold | Swing | [?] | |
2008 Maryland's 1st congressional district election :
| Party | Party | Candidate | Votes | % | ±% |
| | Democratic | Frank Kratovil | 177,065 | 49.12% | +18.01% |
| | Republican | Andy Harris | 174,213 | 48.33% | −20.47% |
| | Libertarian | Richard J. Davis | 8,873 | 2.46% | +2.46% |
| | No party | Write-ins | 329 | 0.09% |
| Total votes | Total votes | Total votes | 360,480 | 100.00% |
| | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican | Democratic gain from Republican |

### 2010s

2010 Maryland's 1st congressional district election :
| Party | Party | Candidate | Votes | % | ±% |
| | Republican | Andrew P. Harris | 155,118 | 54.08% | +5.75% |
| | Democratic | Frank Kratovil (Incumbent) | 120,400 | 41.98% | −7.14% |
| | Libertarian | Richard J. Davis | 10,876 | 3.79% | +1.33% |
| | No party | Write-ins | 418 | 0.15% | |
| Total votes | Total votes | Total votes | 286,812 | 100.00% | |
| | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic | Republican gain from Democratic |
2012 Maryland's 1st congressional district election :
| Party | Party | Candidate | Votes | % |
| | Republican | Andrew P. Harris (Incumbent) | 214,204 | 63.4% |
| | Democratic | Wendy Rosen | 92,812 | 27.5% |
| | Democratic | John LaFerla (write-in) | 14,858 | 4.4% |
| | Libertarian | Muir Wayne Boda | 12,857 | 3.8% |
| | N/A | Others (write-in) | 3,029 | 0.9% |
| Total votes | Total votes | Total votes | 337,760 | 100% |
| | Republican hold | Republican hold | Republican hold | Republican hold |
2014 Maryland's 1st congressional district election :
| Party | Party | Candidate | Votes | % |
| | Republican | Andrew P. Harris (Incumbent) | 176,324 | 70.4% |
| | Democratic | Bill Tilghman | 73,843 | 29.5% |
| | N/A | Others (write-in) | 233 | 0.1% |
| Total votes | Total votes | Total votes | 250,418 | 100% |
| | Republican hold | Republican hold | Republican hold | Republican hold |
2016 Maryland's 1st congressional district election :
| Party | Party | Candidate | Votes | % |
| | Republican | Andrew P. Harris (Incumbent) | 242,574 | 67.0% |
| | Democratic | Joe Werner | 103,622 | 28.6% |
| | Libertarian | Matt Beers | 15,370 | 4.2% |
| | N/A | Others (write-in) | 531 | 0.1% |
| Total votes | Total votes | Total votes | 362,097 | 100% |
| | Republican hold | Republican hold | Republican hold | Republican hold |
2018 Maryland's 1st congressional district election :
| Party | Party | Candidate | Votes | % |
| | Republican | Andrew P. Harris (Incumbent) | 183,662 | 60.0% |
| | Democratic | Jesse Colvin | 116,631 | 38.1% |
| | Libertarian | Jenica Martin | 5,744 | 1.9% |
| | N/A | Others (write-in) | 149 | 0.0% |
| Total votes | Total votes | Total votes | 306,186 | 100% |
| | Republican hold | Republican hold | Republican hold | Republican hold |

### 2020s

2020 Maryland's 1st congressional district election :
| Party | Party | Candidate | Votes | % |
| | Republican | Andrew P. Harris (incumbent) | 250,901 | 63.4 |
| | Democratic | Mia Mason | 143,877 | 36.4 |
| | Write-in | Write-in | 746 | 0.2 |
| Total votes | Total votes | Total votes | 395,524 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |
2022 Maryland's 1st congressional district election :
| Party | Party | Candidate | Votes | % |
| | Republican | Andrew P. Harris (incumbent) | 159,673 | 54.4 |
| | Democratic | Heather Mizeur | 126,511 | 43.1 |
| | Libertarian | Daniel Thibeault | 6,924 | 2.4 |
| | Write-in | Write-in | 250 | 0.1 |
| Total votes | Total votes | Total votes | 293,358 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |
2024 Maryland's 1st congressional district election :
| Party | Party | Candidate | Votes | % |
| | Republican | Andrew P. Harris (incumbent) | 246,356 | 59.41 |
| | Democratic | Blane H. Miller, III | 154,985 | 37.37 |
| | Libertarian | Joshua W. O'Brien | 12,664 | 3.05 |
| | Write-in | Write-in | 675 | 0.16 |
| Total votes | Total votes | Total votes | 414,680 | 100.0 |
| | Republican hold | Republican hold | Republican hold | Republican hold |