The 144th New York State Legislature, consisting of the New York State Senate and the New York State Assembly, met from January 5 to April 16, 1921, during the first year of Nathan L. Miller's governorship, in Albany.

Under the provisions of the New York Constitution of 1894, re-apportioned in 1917, 51 Senators and 150 assemblymen were elected in single-seat districts; senators for a two-year term, assemblymen for a one-year term. The senatorial districts consisted either of one or more entire counties; or a contiguous area within a single county. The counties which were divided into more than one senatorial district were New York (nine districts), Kings (eight), Bronx (three), Erie (three), Monroe (two), Queens (two) and Westchester (two). The Assembly districts were made up of contiguous area, all within the same county.

At this time there were two major political parties: the Republican Party and the Democratic Party. The Socialist Party, the Farmer–Labor Party, the Prohibition Party and the Socialist Labor Party also nominated tickets. The Prohibition Party endorsed the "dry" candidates for the Legislature, mostly Republicans, and nominated own candidates only where the major parties' candidates where "wet". In most of the Socialist strongholds in New York City, Democrats and Republicans nominated fusion candidates.

The New York state election, 1920, was held on November 2. Nathan L. Miller and Jeremiah Wood were elected Governor and Lieutenant Governor, both Republicans. The incumbent Governor Al Smith ran on the Democratic ticket for re-election, but was defeated by Miller with a plurality of about 75,000 votes out of more than two and a half million.

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