After the census of 1930, Pennsylvania's share of congressional seats was reduced from 36 to 34. Evidently, there was very little controversy in the state legislature regarding reapportionment, with the bill being introduced on April 22, 1931, then passed by the House and Senate and signed by the Governor by June 27. Delaware County, due to its population growth, was separated from Chester County, which was shifted into the Tenth congressional district with Lancaster County. Delaware County in its entirety became Pennsylvania's Seventh Congressional District and would remain so for 36 years.