According to this story, New Jersey state courts are still enforcing the state’s ban on out-of-state circulators. The story is about a petition challenge to a Democratic candidate for U.S. House, Sue Altman. She submitted approximately 1,000 signatures and she needed 500. She survived the challenge, but all her signatures collected by out-of-state students were invalidated.
However, a U.S. District Court declared the residency requirement for circulators to be unconstitutional in Arsenault v Way in 2021. Here is that decision. 3:16cv-01854.