2017Final results
2017 election for New Jersey Legislative District 13
New Jersey State Senate · New Jersey
Declan O'Scanlon (R) won with 55.1% of the vote, defeating Sean F. Byrnes (D) by 10.2 points.
Declan O'ScanlonRepublican · winner
55.1%34,976
Sean F. ByrnesDemocrat
44.9%28,493
63,469 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 2017
Races before and after
Source: Harvard Dataverse / Carl KlarnerUpdated Sep 30, 2026, 7:29 AM ET