Since 2023, the district includes all of Armstrong, Cameron, Centre, Clarion, Clearfield, Clinton, Elk, Forest, Jefferson, McKean, Potter, Snyder, Tioga, Union, and Warren counties and parts of Indiana, Lycoming, and Venango counties.

In its former boundaries, it had a slight Democratic tilt in registered voters due to the presence of fairly large cities such as Allentown and Bethlehem, with industrial histories.

The Democrats in the Lehigh Valley are generally considered more moderate than their counterparts in the Philadelphia area, particularly on social issues.

From 2005 to 2018, fellow Republican Charlie Dent represented the district; in September 2017 he announced he would be retiring and not seek re-election in 2018.

The Supreme Court of Pennsylvania redrew the district in February 2018 after ruling the previous map unconstitutional because it had gerrymandered too much on behalf of the Republican Party.