N.Y. State Law § 125

§ 125. Separability of senate districts. Each senate district created\nby this title shall be deemed a separate district for the purpose of\napportionment of the entire state into senate districts. If one or more\nsenate districts created by this title are judicially found to be\ninvalid or unenforceable for any reason, including but not limited to\nnon-compliance with decisions and mandates of a court of competent\njurisdiction, only the defective district or districts and those\nimmediately adjacent or contiguous thereto shall be reapportioned. All\nother districts shall be deemed to be properly created.\n