1978Final results
1978 election for New Jersey's 9th District
U.S. House · New Jersey
Harold C. Hollenbeck (R) won with 48.9% of the vote, defeating Nicholas S. Mastorelli (D) by 11.0 points.
Harold C. HollenbeckRepublican · winner
48.9%73,478
Nicholas S. MastorelliDemocrat
37.9%56,888
Henry HelstoskiIndependent
12.7%19,126
Bruce ToddOther party
0.4%663
150,155 votes
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The seat over time
D − R margin in this seat's races around 1978
Races before and after
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
The candidates
Harold C. Hollenbeck (R)Nicholas S. Mastorelli (D)Henry Helstoski (I)
Also on the ballot: Bruce Todd (Other party), 0.4%