Cartwright faced Incumbent Tim Holden. Holden is a 10 term politician.
Cartwright is an attorney from Lackawanna County. He told Eyewitness News he will fight for the middle class.
The 17th Congressional District was recently changed it now stretches from Scranton to Wilkes-Barre to Schuylkill County to Easton.
Cartwright will face Lauren Cummings of Old Forge in November's general election.