Clyde Cook, the only Republican who filed for the New Jersey State Senate District 5 seat, only submitted 105 signatures. His petition was challenged and he was removed from the primary ballot. The requirement is 100 signatures. See this story. The primary is in June 2021. New Jersey allows write-ins in primaries, so Cook may still win the nomination if he receives at least 100 write-ins and no one else polls more write-ins than that.