These races were decided based on districts configured pursuant to the 2001 Census.
9th District
Counties: Chester (part) and Delaware (part)
Senate Majority Leader Dominic Pileggi handily won the Republican nomination over challenger Roger Howard, 69.4% to 30.6%. Patricia Worrell will be his Democratic opponent in November.
15th District
Counties: Dauphin (part) and York (part)
This is an open seat due to the retirement of Republican Jeff Piccola. In a three-way Republican race, John McNally won the nomination with 48.4% of the vote, while Democrat Rob Teplitz received 50.9% of the vote over opponent Alvin Taylor with 49.1% of the vote.
21st District
Counties: Butler (part), Clarion (all), Erie (part), Forest (all), Venango (all) and Warren (all)
This is an open seat due to the retirement of Republican Mary Jo White. The only candidate was current Republican Representative Scott Hutchinson, who will have no Democratic opponent in the fall.
23rd District
Counties: Bradford (all), Lycoming (all), Sullivan (all), Susquehanna (part) and Union (part)
Republican incumbent Gene Yaw defeated challenger David Huffman, Jr., 75.4% to 24.6%. He will face Democrat Luana Cleveland in the General Election.
29th District
Counties: Berks (part), Carbon (part), Lehigh (part), Monroe (part), Northampton (part) and Schuylkill (all)
In a hotly contested race, incumbent David Argall won the Republican nomination over challenger Brian Rich, 54.3% to 45,8%. His Democratic challenger in November will be Tim Seip.
31st District
Counties: Cumberland (all) and York (part)
In another contested race, Republican incumbent Patricia Vance defeated challenger Andrew Shaw, capturing 56.9% of the vote. She will have no Democratic opponent in the General Election.
37th District
Counties: Allegheny (part) and Washington (part)
This is an open seat due to the retirement of Republican John Pippy. Three Republicans vied for the nomination, with D. Raja defeating his two challengers including current Representative Mark Mustio. Raja received 43.7% of the vote with Sue Means receiving 31.6% and Mustio coming in third with 24.7% of the vote. Raja will run unopposed in November.
49th District
Counties: Erie (part)
This is an open seat due to the retirement of Republican Jane M. Earll. In a four-way Democratic race Sean Wiley led his three opponents by receiving 40.3% of the vote. His Republican opponent in the General Election will be Janet Anderson, who ran unopposed in the Primary.