In December 1964, the assembly and senate districts were re-apportioned.
This time, the legislators were elected for an exceptional one-year term (the session of 1966).
From this election on, the assembly districts are all numbered statewide (from 1 to 165, in 1966; from 1 to 150 thereafter) instead of apportioned by county and numbered inside the county (previously 150 districts).
This was the only general election of state legislators in an odd-numbered year after 1937.
Vote totals from New York Red Book 1966