Margo Lomax Davidson is a former Democratic member of the Pennsylvania House of Representatives, representing the 164th Legislative District from 2011 until her resignation on July 22, 2021 due to criminal charges. The district included parts of Upper Darby Township, and the boroughs of East Lansdowne and Millbourne.

Upper Darby Township, often shortened to Upper Darby, is a home rule township in Delaware County, Pennsylvania, United States. As of the 2020 census, the township had a total population of 85,681, making it the state's sixth-most populated municipality after Philadelphia, Pittsburgh, Allentown, Reading, and Erie. Upper Darby borders Philadelphia, the nation's sixth-most populous city, and constitutes part of the Delaware Valley, also known as the Philadelphia metropolitan area, the nation's seventh-largest metropolitan area.