Because of the US Supreme Court's one-person, one-vote decision, recent years have seen in that country an increase in the number of ‘geographically-split’ legislative districts; i.e., legislative districts divided into distinct sections by a natural feature such as a river, harbour, desert or mountain chain. This article analyses elections in one such district, the New York State 62nd Assembly District in New York City, whose Staten Island half was separated from its Manhattan half by New York Harbour. In almost all the elections, a ‘friends-and-neighbours’ factor played a role, with candidates from a particular part of the district faring better there than on the other side of the harbour. (However, partisan allegiance had some impact in these races as well.) Further research is needed to determine whether the ‘friends-and-neighbours’ factor prevails in other geographically-split legislative districts and, if so, the extent to which legislators from one portion of a district adequately represent the interests of the residents of the other.