^There was no codified start for terms when Clinton took office; the date was set at July 1 in 1787, starting presumably in 1789. Most sources state that early governors took office on April 1; however, more contemporary sources note the elections were held on April 1, with the oath of office being delivered on July 1.
^With the election of Morgan Lewis as Governor, the DRs began to divide into two factions, the Lewisites loyal to Lewis, and Clintonians loyal to DeWitt Clinton.
^A Democratic-Republican, Daniel Cruger, was elected with three members absent on a 62–61 vote. A seat was contested by the Federalists, however, which led to an extended fight over the Council of Appointment. After the DRs won that debate, the contested seat was handed to the Federalist, and the Federalists had a functional majority of 62–61 despite the loss of the Speaker's seat.
^ abcdefghAs lieutenant governor, assumed governorship upon resignation of predecessor.
^The length and dates of terms were changed in 1821, during Clinton's second term, which then ended on December 31, 1822 rather than July 1, 1823.
^A division within the Democratic-Republican Party occurred with the election of DeWitt Clinton as Governor between the Clintonians, who were loyal to him, and Bucktails, who were aligned with Martin Van Buren.
^A coalition was formed between the Clintonians and Federalists to elect John Canfield Spencer, a Clintonian, as Speaker and organized the chamber.
^Elected Chief Justice of the New York Supreme Court by the State Legislature.
^Per the 1821 state constitution, Yates' term was the first to last two years rather than three.
^Elected a justice of the New York Supreme Court by the State Legislature shortly before the end of his second term.
^The state delegation of New York in the U.S. House of Representatives voted 18-14-2 for John Quincy Adams.
^In April 1824, Clinton's political enemies, the Bucktails, voted in the New York State Legislature for his removal from his post as president of the Erie Canal Commission, causing such indignation among the electorate that he was nominated for governor by the "People's Party", and was re-elected governor over the official candidate of the Democratic-Republican Party, fellow canal commissioner Samuel Young.
^ abcdeResigned when elected Governor of New York.
^With the adoption of the Constitution of 1847, Senators moved from having one-quarter of the body each year to having every seat in the body up every two years, starting with the election of 1847.
^Due to a disputed election with a Whig candidate, the Democrats had a nominal majority at the start of session, and elected Noble S. Elderkin Speaker and organized the chamber. Midway through the session, Elderkin departed to care for his ill wife, and the Whigs assumed functional control under Robert H. Pruyn. After the seat dispute was decided in favor of the Democrat, and after it had been determined Elderkin would be gone the rest of session, a Democrat, Ferral C. Dininny, was again selected as Speaker.
^As a results of the even split, over the two year term, the Senate President Pro Tempore was traded between Edwin D. Morgan, a Whig, and William McMurray, a Democrat. Morgan had it for the first two months of 1852, then McMurray had it the last month of that session and the regular session of 1853, and then Morgan retained for the special session of 1853.
^Welch successfully contested Cook's election, and served from November 20, 1852 to the end of the term.
^ abElected on a fusion Whig-Free Democratic ticket.
^A Democrat, Orville Robinson, was elected with the help of Republican members on the 49th ballot.
^The Know Nothings and Independent Republican members worked with the Republicans to organize the chamber.
^A Democrat, Thomas G. Alvord, was elected with the help of the Know Nothings on the 53th ballot.
^A Democrat, Theophilus C. Callicot, was elected Speaker after cutting a deal with the Republicans that if he was elected, he would guarantee the election of a Republican Senator, later determined to be Edwin D. Morgan.
^ abResigned in protest of President James A. Garfield's position on federal appointments.
^Per an 1874 amendment to the state constitution—taking effect January 1, 1875—Robinson's term was the first to last three years instead of two. As Tilden had been elected prior to the amendment's taking effect, he served the old two-year term.
^Per the 1894 state constitution, his term was the first to last two years rather than three.
^Due to a change in the Constitution of New York in 1894, the Senate began to have its elections during even years, with a three-year term with the election of 1895 to allow for a transition.
^Appointed to fill remainder of term, then subsequently elected to in his own right.
^As majority Leader of the New York State Senate, served as Acting Lt. Governor upon succession of Lt. Governor to Governor, then elected in his own right.
^Resigned to become President of Nelson Rockefeller's Government Affairs Foundation.
^Forced to resign when it became known that he had made frequent visits to convicted labor leader Joseph S. Fay while the latter was incarcerated at Sing Sing prison.
^ abElected by State Legislature to fill unexpired term, later elected in their own right.
^ abcConservative member(s) caucused with the Republicans.
^Conservative member(s) caucused with the Republicans. John J. Walsh, a registered Democrat, ran for re-election on the ticket of an "Upper Manhattan Apartment Building Party", and defeated the regular Democratic candidate Edward H. Lehner[1]
^ abcdefghMembers of the Liberal, Independence, and Working Families parties caucused with Democrats.
^Switched parties after not being selected to be Governor Pataki's running mate for the 1998 election.
^Re-elected in 2006, but resigned prior to beginning of the new term.
^Was Acting Attorney General from May 8 to May 22, was subsequently appointed May 22 by the New York Legislature to serve out the remainder of Schneiderman's term.
^Democratic Senator Simcha Felder, who had caucused with the Republican majority, was without a caucus until July 2019 when he was accepted into the Democratic majority.
^Senate Temporary President Andrea Stewart-Cousins (D) served as Acting Lieutenant Governor from August 24–September 9, 2021
^Senate Temporary President Andrea Stewart-Cousins (D) served as Acting Lieutenant Governor from April 12–May 25, 2022
^Independence Assemblyman Fred Thiele joined the Democratic Party on May 5, 2022.
^Republican George Santos of the 3rd district was expelled from congress on December 1, 2023. Democrat Tom Suozzi won a special election to succeed him on February 13, 2024.