{"congress":1,"year_start":1789,"year_end":1791,"seats":65,"p1":"Pro-Administration","np1":37,"p2":"Anti-Administration","np2":28,"other":0,"vac":0,"del":0,"res":0}
{"congress":2,"year_start":1791,"year_end":1793,"seats":69,"p1":"Pro-Administration","np1":39,"p2":"Anti-Administration","np2":30,"other":0,"vac":0,"del":0,"res":0}
{"congress":3,"year_start":1793,"year_end":1795,"seats":106,"p1":"Pro-Administration","np1":51,"p2":"Anti-Administration","np2":54,"other":1,"vac":0,"del":1,"res":0}
{"congress":4,"year_start":1795,"year_end":1797,"seats":106,"p1":"Federalists","np1":47,"p2":"Jeffersonian Republicans","np2":59,"other":0,"vac":0,"del":1,"res":0}
{"congress":5,"year_start":1797,"year_end":1799,"seats":106,"p1":"Federalists","np1":57,"p2":"Jeffersonian Republicans","np2":49,"other":0,"vac":0,"del":0,"res":0}
{"congress":6,"year_start":1799,"year_end":1801,"seats":106,"p1":"Federalists","np1":60,"p2":"Jeffersonian Republicans","np2":46,"other":0,"vac":0,"del":1,"res":0}
{"congress":7,"year_start":1801,"year_end":1803,"seats":107,"p1":"Federalists","np1":38,"p2":"Jeffersonian Republicans","np2":68,"other":0,"vac":1,"del":2,"res":0}
{"congress":8,"year_start":1803,"year_end":1805,"seats":142,"p1":"Federalists","np1":39,"p2":"Jeffersonian Republicans","np2":103,"other":0,"vac":0,"del":1,"res":0}
{"congress":9,"year_start":1805,"year_end":1807,"seats":142,"p1":"Federalists","np1":28,"p2":"Jeffersonian Republicans","np2":114,"other":0,"vac":0,"del":3,"res":0}
{"congress":10,"year_start":1807,"year_end":1809,"seats":142,"p1":"Federalists","np1":26,"p2":"Jeffersonian Republicans","np2":116,"other":0,"vac":0,"del":3,"res":0}
{"congress":11,"year_start":1809,"year_end":1811,"seats":142,"p1":"Federalists","np1":50,"p2":"Jeffersonian Republicans","np2":92,"other":0,"vac":0,"del":3,"res":0}
{"congress":12,"year_start":1811,"year_end":1813,"seats":143,"p1":"Federalists","np1":36,"p2":"Jeffersonian Republicans","np2":107,"other":0,"vac":0,"del":5,"res":0}
{"congress":13,"year_start":1813,"year_end":1815,"seats":182,"p1":"Federalists","np1":68,"p2":"Jeffersonian Republicans","np2":114,"other":0,"vac":0,"del":4,"res":0}
{"congress":14,"year_start":1815,"year_end":1817,"seats":183,"p1":"Federalists","np1":64,"p2":"Jeffersonian Republicans","np2":119,"other":0,"vac":0,"del":4,"res":0}
{"congress":15,"year_start":1817,"year_end":1819,"seats":185,"p1":"Federalists","np1":39,"p2":"Jeffersonian Republicans","np2":146,"other":0,"vac":0,"del":4,"res":0}
{"congress":16,"year_start":1819,"year_end":1821,"seats":186,"p1":"Federalists","np1":26,"p2":"Jeffersonian Republicans","np2":160,"other":0,"vac":0,"del":4,"res":0}
{"congress":17,"year_start":1821,"year_end":1823,"seats":187,"p1":"Federalists","np1":32,"p2":"Jeffersonian Republicans","np2":155,"other":0,"vac":0,"del":4,"res":0}
{"congress":18,"year_start":1823,"year_end":1825,"seats":213,"p1":"Adams-Clay Republicans","np1":72,"p2":"Jackson Republicans","np2":64,"other":77,"vac":0,"del":3,"res":0}
{"congress":19,"year_start":1825,"year_end":1827,"seats":213,"p1":"Adams","np1":109,"p2":"Jacksons","np2":104,"other":0,"vac":0,"del":3,"res":0}
{"congress":20,"year_start":1827,"year_end":1829,"seats":213,"p1":"Adams","np1":100,"p2":"Jacksons","np2":113,"other":0,"vac":0,"del":3,"res":0}
{"congress":21,"year_start":1829,"year_end":1831,"seats":213,"p1":"Anti-Jacksons","np1":72,"p2":"Jacksons","np2":136,"other":5,"vac":0,"del":3,"res":0}
{"congress":22,"year_start":1831,"year_end":1833,"seats":213,"p1":"Anti-Jacksons","np1":66,"p2":"Jacksons","np2":126,"other":21,"vac":0,"del":3,"res":0}
{"congress":23,"year_start":1833,"year_end":1835,"seats":240,"p1":"Anti-Jacksons","np1":63,"p2":"Jacksons","np2":143,"other":34,"vac":0,"del":3,"res":0}
{"congress":24,"year_start":1835,"year_end":1837,"seats":242,"p1":"Anti-Jacksons","np1":75,"p2":"Jacksons","np2":143,"other":24,"vac":0,"del":4,"res":0}
{"congress":25,"year_start":1837,"year_end":1839,"seats":242,"p1":"Democrats","np1":128,"p2":"Whigs","np2":100,"other":14,"vac":0,"del":3,"res":0}
{"congress":26,"year_start":1839,"year_end":1841,"seats":242,"p1":"Democrats","np1":125,"p2":"Whigs","np2":109,"other":8,"vac":0,"del":3,"res":0}
{"congress":27,"year_start":1841,"year_end":1843,"seats":242,"p1":"Democrats","np1":98,"p2":"Whigs","np2":142,"other":2,"vac":0,"del":3,"res":0}
{"congress":28,"year_start":1843,"year_end":1845,"seats":223,"p1":"Democrats","np1":147,"p2":"Whigs","np2":72,"other":4,"vac":0,"del":3,"res":0}
{"congress":29,"year_start":1845,"year_end":1847,"seats":228,"p1":"Democrats","np1":142,"p2":"Whigs","np2":79,"other":6,"vac":1,"del":2,"res":0}
{"congress":30,"year_start":1847,"year_end":1849,"seats":230,"p1":"Democrats","np1":110,"p2":"Whigs","np2":116,"other":4,"vac":0,"del":1,"res":0}
{"congress":31,"year_start":1849,"year_end":1851,"seats":233,"p1":"Democrats","np1":113,"p2":"Whigs","np2":108,"other":11,"vac":1,"del":2,"res":0}
{"congress":32,"year_start":1851,"year_end":1853,"seats":233,"p1":"Democrats","np1":127,"p2":"Whigs","np2":85,"other":21,"vac":0,"del":4,"res":0}
{"congress":33,"year_start":1853,"year_end":1855,"seats":234,"p1":"Democrats","np1":157,"p2":"Whigs","np2":71,"other":6,"vac":0,"del":7,"res":0}
{"congress":34,"year_start":1855,"year_end":1857,"seats":234,"p1":"Democrats","np1":83,"p2":"Oppositions","np2":100,"other":51,"vac":0,"del":7,"res":0}
{"congress":35,"year_start":1857,"year_end":1859,"seats":237,"p1":"Democrats","np1":132,"p2":"Republicans","np2":90,"other":15,"vac":0,"del":7,"res":0}
{"congress":36,"year_start":1859,"year_end":1861,"seats":238,"p1":"Democrats","np1":83,"p2":"Republicans","np2":116,"other":39,"vac":0,"del":5,"res":0}
{"congress":37,"year_start":1861,"year_end":1863,"seats":183,"p1":"Democrats","np1":44,"p2":"Republicans","np2":108,"other":31,"vac":0,"del":7,"res":0}
{"congress":38,"year_start":1863,"year_end":1865,"seats":184,"p1":"Democrats","np1":72,"p2":"Republicans","np2":85,"other":27,"vac":0,"del":10,"res":0}
{"congress":39,"year_start":1865,"year_end":1867,"seats":193,"p1":"Democrats","np1":38,"p2":"Republicans","np2":136,"other":19,"vac":0,"del":9,"res":0}
{"congress":40,"year_start":1867,"year_end":1869,"seats":226,"p1":"Democrats","np1":47,"p2":"Republicans","np2":173,"other":4,"vac":2,"del":8,"res":0}
{"congress":41,"year_start":1869,"year_end":1871,"seats":243,"p1":"Democrats","np1":67,"p2":"Republicans","np2":171,"other":5,"vac":0,"del":9,"res":0}
{"congress":42,"year_start":1871,"year_end":1873,"seats":243,"p1":"Democrats","np1":104,"p2":"Republicans","np2":136,"other":3,"vac":0,"del":10,"res":0}
{"congress":43,"year_start":1873,"year_end":1875,"seats":292,"p1":"Democrats","np1":88,"p2":"Republicans","np2":199,"other":5,"vac":0,"del":10,"res":0}
{"congress":44,"year_start":1875,"year_end":1877,"seats":293,"p1":"Democrats","np1":182,"p2":"Republicans","np2":103,"other":8,"vac":0,"del":9,"res":0}
{"congress":45,"year_start":1877,"year_end":1879,"seats":293,"p1":"Democrats","np1":155,"p2":"Republicans","np2":136,"other":2,"vac":0,"del":8,"res":0}
{"congress":46,"year_start":1879,"year_end":1881,"seats":293,"p1":"Democrats","np1":141,"p2":"Republicans","np2":132,"other":20,"vac":0,"del":8,"res":0}
{"congress":47,"year_start":1881,"year_end":1883,"seats":293,"p1":"Democrats","np1":128,"p2":"Republicans","np2":151,"other":14,"vac":0,"del":8,"res":0}
{"congress":48,"year_start":1883,"year_end":1885,"seats":325,"p1":"Democrats","np1":196,"p2":"Republicans","np2":117,"other":12,"vac":0,"del":8,"res":0}
{"congress":49,"year_start":1885,"year_end":1887,"seats":325,"p1":"Democrats","np1":182,"p2":"Republicans","np2":141,"other":2,"vac":0,"del":8,"res":0}
{"congress":50,"year_start":1887,"year_end":1889,"seats":325,"p1":"Democrats","np1":167,"p2":"Republicans","np2":152,"other":6,"vac":0,"del":8,"res":0}
{"congress":51,"year_start":1889,"year_end":1891,"seats":332,"p1":"Democrats","np1":152,"p2":"Republicans","np2":179,"other":1,"vac":0,"del":9,"res":0}
{"congress":52,"year_start":1891,"year_end":1893,"seats":332,"p1":"Democrats","np1":238,"p2":"Republicans","np2":86,"other":8,"vac":0,"del":4,"res":0}
{"congress":53,"year_start":1893,"year_end":1895,"seats":356,"p1":"Democrats","np1":218,"p2":"Republicans","np2":124,"other":14,"vac":0,"del":4,"res":0}
{"congress":54,"year_start":1895,"year_end":1897,"seats":357,"p1":"Democrats","np1":93,"p2":"Republicans","np2":254,"other":10,"vac":0,"del":4,"res":0}
{"congress":55,"year_start":1897,"year_end":1899,"seats":357,"p1":"Democrats","np1":124,"p2":"Republicans","np2":206,"other":27,"vac":0,"del":3,"res":0}
{"congress":56,"year_start":1899,"year_end":1901,"seats":357,"p1":"Democrats","np1":161,"p2":"Republicans","np2":187,"other":9,"vac":0,"del":4,"res":0}
{"congress":57,"year_start":1901,"year_end":1903,"seats":357,"p1":"Democrats","np1":151,"p2":"Republicans","np2":200,"other":6,"vac":0,"del":4,"res":1}
{"congress":58,"year_start":1903,"year_end":1905,"seats":386,"p1":"Democrats","np1":176,"p2":"Republicans","np2":207,"other":3,"vac":0,"del":4,"res":1}
{"congress":59,"year_start":1905,"year_end":1907,"seats":386,"p1":"Democrats","np1":135,"p2":"Republicans","np2":251,"other":0,"vac":0,"del":5,"res":1}
{"congress":60,"year_start":1907,"year_end":1909,"seats":391,"p1":"Democrats","np1":167,"p2":"Republicans","np2":223,"other":1,"vac":0,"del":5,"res":1}
{"congress":61,"year_start":1909,"year_end":1911,"seats":391,"p1":"Democrats","np1":172,"p2":"Republicans","np2":219,"other":0,"vac":0,"del":4,"res":3}
{"congress":62,"year_start":1911,"year_end":1913,"seats":394,"p1":"Democrats","np1":230,"p2":"Republicans","np2":162,"other":2,"vac":0,"del":4,"res":3}
{"congress":63,"year_start":1913,"year_end":1915,"seats":435,"p1":"Democrats","np1":291,"p2":"Republicans","np2":134,"other":10,"vac":0,"del":2,"res":3}
{"congress":64,"year_start":1915,"year_end":1917,"seats":435,"p1":"Democrats","np1":230,"p2":"Republicans","np2":196,"other":9,"vac":0,"del":2,"res":3}
{"congress":65,"year_start":1917,"year_end":1919,"seats":435,"p1":"Democrats","np1":214,"p2":"Republicans","np2":215,"other":6,"vac":0,"del":2,"res":3}
{"congress":66,"year_start":1919,"year_end":1921,"seats":435,"p1":"Democrats","np1":192,"p2":"Republicans","np2":240,"other":2,"vac":1,"del":2,"res":3}
{"congress":67,"year_start":1921,"year_end":1923,"seats":435,"p1":"Democrats","np1":131,"p2":"Republicans","np2":302,"other":2,"vac":0,"del":2,"res":3}
{"congress":68,"year_start":1923,"year_end":1925,"seats":435,"p1":"Democrats","np1":207,"p2":"Republicans","np2":225,"other":3,"vac":0,"del":2,"res":3}
{"congress":69,"year_start":1925,"year_end":1927,"seats":435,"p1":"Democrats","np1":183,"p2":"Republicans","np2":247,"other":5,"vac":0,"del":2,"res":3}
{"congress":70,"year_start":1927,"year_end":1929,"seats":435,"p1":"Democrats","np1":194,"p2":"Republicans","np2":238,"other":3,"vac":0,"del":2,"res":3}
{"congress":71,"year_start":1929,"year_end":1931,"seats":435,"p1":"Democrats","np1":164,"p2":"Republicans","np2":270,"other":1,"vac":0,"del":2,"res":3}
{"congress":72,"year_start":1931,"year_end":1933,"seats":435,"p1":"Democrats","np1":216,"p2":"Republicans","np2":218,"other":1,"vac":0,"del":2,"res":3}
{"congress":73,"year_start":1933,"year_end":1935,"seats":435,"p1":"Democrats","np1":313,"p2":"Republicans","np2":117,"other":5,"vac":0,"del":2,"res":3}
{"congress":74,"year_start":1935,"year_end":1937,"seats":435,"p1":"Democrats","np1":322,"p2":"Republicans","np2":103,"other":10,"vac":0,"del":2,"res":3}
{"congress":75,"year_start":1937,"year_end":1939,"seats":435,"p1":"Democrats","np1":334,"p2":"Republicans","np2":88,"other":13,"vac":0,"del":2,"res":2}
{"congress":76,"year_start":1939,"year_end":1941,"seats":435,"p1":"Democrats","np1":262,"p2":"Republicans","np2":169,"other":4,"vac":0,"del":2,"res":2}
{"congress":77,"year_start":1941,"year_end":1943,"seats":435,"p1":"Democrats","np1":267,"p2":"Republicans","np2":162,"other":6,"vac":0,"del":2,"res":2}
{"congress":78,"year_start":1943,"year_end":1945,"seats":435,"p1":"Democrats","np1":222,"p2":"Republicans","np2":209,"other":4,"vac":0,"del":2,"res":2}
{"congress":79,"year_start":1945,"year_end":1947,"seats":435,"p1":"Democrats","np1":242,"p2":"Republicans","np2":191,"other":2,"vac":0,"del":2,"res":2}
{"congress":80,"year_start":1947,"year_end":1949,"seats":435,"p1":"Democrats","np1":188,"p2":"Republicans","np2":246,"other":1,"vac":0,"del":2,"res":1}
{"congress":81,"year_start":1949,"year_end":1951,"seats":435,"p1":"Democrats","np1":263,"p2":"Republicans","np2":171,"other":1,"vac":0,"del":2,"res":1}
{"congress":82,"year_start":1951,"year_end":1953,"seats":435,"p1":"Democrats","np1":235,"p2":"Republicans","np2":199,"other":1,"vac":0,"del":2,"res":1}
{"congress":83,"year_start":1953,"year_end":1955,"seats":435,"p1":"Democrats","np1":213,"p2":"Republicans","np2":221,"other":1,"vac":0,"del":2,"res":1}
{"congress":84,"year_start":1955,"year_end":1957,"seats":435,"p1":"Democrats","np1":232,"p2":"Republicans","np2":203,"other":0,"vac":0,"del":2,"res":1}
{"congress":85,"year_start":1957,"year_end":1959,"seats":435,"p1":"Democrats","np1":234,"p2":"Republicans","np2":201,"other":0,"vac":0,"del":2,"res":1}
{"congress":86,"year_start":1959,"year_end":1961,"seats":437,"p1":"Democrats","np1":283,"p2":"Republicans","np2":153,"other":1,"vac":0,"del":0,"res":1}
{"congress":87,"year_start":1961,"year_end":1963,"seats":437,"p1":"Democrats","np1":263,"p2":"Republicans","np2":174,"other":0,"vac":0,"del":0,"res":1}
{"congress":88,"year_start":1963,"year_end":1965,"seats":435,"p1":"Democrats","np1":259,"p2":"Republicans","np2":176,"other":0,"vac":0,"del":0,"res":1}
{"congress":89,"year_start":1965,"year_end":1967,"seats":435,"p1":"Democrats","np1":295,"p2":"Republicans","np2":140,"other":0,"vac":0,"del":0,"res":1}
{"congress":90,"year_start":1967,"year_end":1969,"seats":435,"p1":"Democrats","np1":247,"p2":"Republicans","np2":187,"other":0,"vac":1,"del":0,"res":1}
{"congress":91,"year_start":1969,"year_end":1971,"seats":435,"p1":"Democrats","np1":243,"p2":"Republicans","np2":192,"other":0,"vac":0,"del":0,"res":1}
{"congress":92,"year_start":1971,"year_end":1973,"seats":435,"p1":"Democrats","np1":255,"p2":"Republicans","np2":180,"other":0,"vac":0,"del":1,"res":1}
{"congress":93,"year_start":1973,"year_end":1975,"seats":435,"p1":"Democrats","np1":242,"p2":"Republicans","np2":192,"other":1,"vac":0,"del":3,"res":1}
{"congress":94,"year_start":1975,"year_end":1977,"seats":435,"p1":"Democrats","np1":291,"p2":"Republicans","np2":144,"other":0,"vac":0,"del":3,"res":1}
{"congress":95,"year_start":1977,"year_end":1979,"seats":435,"p1":"Democrats","np1":292,"p2":"Republicans","np2":143,"other":0,"vac":0,"del":3,"res":1}
{"congress":96,"year_start":1979,"year_end":1981,"seats":435,"p1":"Democrats","np1":277,"p2":"Republicans","np2":158,"other":0,"vac":0,"del":3,"res":1}
{"congress":97,"year_start":1981,"year_end":1983,"seats":435,"p1":"Democrats","np1":242,"p2":"Republicans","np2":192,"other":1,"vac":0,"del":4,"res":1}
{"congress":98,"year_start":1983,"year_end":1985,"seats":435,"p1":"Democrats","np1":269,"p2":"Republicans","np2":166,"other":0,"vac":0,"del":4,"res":1}
{"congress":99,"year_start":1985,"year_end":1987,"seats":435,"p1":"Democrats","np1":253,"p2":"Republicans","np2":182,"other":0,"vac":0,"del":4,"res":1}
{"congress":100,"year_start":1987,"year_end":1989,"seats":435,"p1":"Democrats","np1":258,"p2":"Republicans","np2":177,"other":0,"vac":0,"del":4,"res":1}
{"congress":101,"year_start":1989,"year_end":1991,"seats":435,"p1":"Democrats","np1":260,"p2":"Republicans","np2":175,"other":0,"vac":0,"del":4,"res":1}
{"congress":102,"year_start":1991,"year_end":1993,"seats":435,"p1":"Democrats","np1":267,"p2":"Republicans","np2":167,"other":1,"vac":0,"del":4,"res":1}
{"congress":103,"year_start":1993,"year_end":1995,"seats":435,"p1":"Democrats","np1":258,"p2":"Republicans","np2":176,"other":1,"vac":0,"del":4,"res":1}
{"congress":104,"year_start":1995,"year_end":1997,"seats":435,"p1":"Democrats","np1":204,"p2":"Republicans","np2":230,"other":1,"vac":0,"del":4,"res":1}
{"congress":105,"year_start":1997,"year_end":1999,"seats":435,"p1":"Democrats","np1":206,"p2":"Republicans","np2":228,"other":1,"vac":0,"del":4,"res":1}
{"congress":106,"year_start":1999,"year_end":2001,"seats":435,"p1":"Democrats","np1":211,"p2":"Republicans","np2":223,"other":1,"vac":0,"del":4,"res":1}
{"congress":107,"year_start":2001,"year_end":2003,"seats":435,"p1":"Democrats","np1":212,"p2":"Republicans","np2":221,"other":2,"vac":0,"del":4,"res":1}
{"congress":108,"year_start":2003,"year_end":2005,"seats":435,"p1":"Democrats","np1":205,"p2":"Republicans","np2":229,"other":1,"vac":0,"del":4,"res":1}
{"congress":109,"year_start":2005,"year_end":2007,"seats":435,"p1":"Democrats","np1":202,"p2":"Republicans","np2":232,"other":1,"vac":0,"del":4,"res":1}
{"congress":110,"year_start":2007,"year_end":2009,"seats":435,"p1":"Democrats","np1":233,"p2":"Republicans","np2":202,"other":0,"vac":0,"del":4,"res":1}
{"congress":111,"year_start":2009,"year_end":2011,"seats":435,"p1":"Democrats","np1":257,"p2":"Republicans","np2":178,"other":0,"vac":0,"del":5,"res":1}
{"congress":112,"year_start":2011,"year_end":2013,"seats":435,"p1":"Democrats","np1":193,"p2":"Republicans","np2":242,"other":0,"vac":0,"del":5,"res":1}
{"congress":113,"year_start":2013,"year_end":2015,"seats":435,"p1":"Democrats","np1":201,"p2":"Republicans","np2":234,"other":0,"vac":0,"del":5,"res":1}
{"congress":114,"year_start":2015,"year_end":2017,"seats":435,"p1":"Democrats","np1":188,"p2":"Republicans","np2":247,"other":0,"vac":0,"del":5,"res":1}
{"congress":115,"year_start":2017,"year_end":2019,"seats":435,"p1":"Democrats","np1":194,"p2":"Republicans","np2":241,"other":0,"vac":0,"del":5,"res":1}
{"congress":116,"year_start":2019,"year_end":2021,"seats":435,"p1":"Democrats","np1":235,"p2":"Republicans","np2":199,"other":0,"vac":0,"del":5,"res":1}