Mary Gay Scanlon (born August 30, 1959) is an American attorney and politician. She is a member of the United States House of Representatives, representing Pennsylvania's 5th congressional district, since being sworn into office on January 3, 2019. The district is based in Delaware County, a mostly suburban county south of Philadelphia, and includes a sliver of Philadelphia itself. She spent the final two months of 2018 as the member for Pennsylvania's 7th congressional district. She was elected to both positions on November 6, 2018. That day, she ran in a special election in the old 7th to serve out the term of her predecessor, Pat Meehan and in a regular election for a full two-year term in the new 5th. She was sworn in as the member for the 7th on November 13, 2018 and transferred to th