Illinois's 1st House of Representatives district is a Representative district within the Illinois House of Representatives located in Cook County, Illinois. It has been represented by Democrat Aaron Ortiz since January 9, 2019. The district was previously represented by Democrat Daniel J. Burke from 2013 to 2018.
The district covers parts of Chicago, Forest View, and Stickney, and of Chicago's neighborhoods, it covers Archer Heights, Bridgeport, Brighton Park, Chicago Lawn, Gage Park, Garfield Ridge, McKinley Park, New City, and West Elsdon.
Prior to the ratification of the 1848 Illinois Constitution, counties (or two or more counties) were designated a certain number of Senators and Representatives. With the ratification of the 1848 Illinois Constitution, Legislative and Representative districts were numbered and called by name. Each district was still assigned a certain number of Senators and Representatives. After the passage of the 1872 Apportionment, only Legislative districts were drawn with Representatives elected cumulatively. The 1954 amendment to the 1870 Illinois Constitution established Representative districts as separate from Legislative districts (with representatives still elected cumulatively). The boundaries of Representative and Legislative districts would differ. After the United States Supreme Court ruled in Reynolds v. Sims (1964) that "both houses of state legislatures must be apportioned according to districts of equal population," new districts were redrawn for the Illinois Senate and Illinois House of Representatives. While the Legislative districts were redrawn, the Governor and General Assembly failed to agree on Representative district boundaries. Under the 1954 amendment, "a 10-man bipartisan commission appointed by the governor from recommendations made by both parties" were directed to redraw boundaries but failed to do so in 1963. Because of this failure, and with no district boundaries redrawn, all Representative districts were temporarily merged into one at-large district with 177 representatives (the total number of representatives at the time). The 1964 Illinois House election had several candidates running for all 177 seats throughout the state. In 1965, the Representative districts were redrawn by the Illinois Legislative Reapportionment Commission and elections held in 1966 were done with separate districts. With the 1971 Apportionment (and adoption of the 1970 Illinois Constitution), Representative districts were abolished and representatives were once again elected cumulatively per Legislative district. After the passage of the Cutback Amendment in 1980, the number of Representatives was reduced from 177 to 118 with Representative districts re-established and now electing a single representative.