1978Final results
1978 election for Pennsylvania Senate District 20
Pennsylvania State Senate · Pennsylvania
Frank J. Oconnell (R) won with 71.4% of the vote, defeating Thomas E. Lehman III (D) by 42.8 points.
Frank J. OconnellRepublican · winner
71.4%58,153
Thomas E. Lehman IIIDemocrat
28.6%23,272
81,425 votes
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET
The seat over time
D − R margin in this seat's races around 1978
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET