2017Final results
2017 election for New Jersey Legislative District 21
New Jersey State Senate · New Jersey
Thomas Kean Jr. (R) won with 54.7% of the vote, defeating Jill Anne Lazare (D) by 9.4 points.
Thomas Kean Jr.Republican · winner · incumbent
54.7%37,579
Jill Anne LazareDemocrat
45.3%31,123
68,702 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