The district was redrawn earlier this year during Republican-controlled redistricting. The defeat was a first for Critz, a Democrat who replaced John Murtha, who died in office in February 2010.
Rothfus, a corporate attorney, says he’s ready to get to work this January.
This is Rothfus’s first win in a general election. He lost to former Congressman Jason Altmire in 2010. Altmire was defeated in this year’s Democratic primary by Critz.