In 1886 he was elected mayor of New York City, his nomination having been forced upon the Democratic Party by the strength of the other nominees, Henry George and Theodore Roosevelt; his administration (1887-1888) was thoroughly efficient and creditable, but he broke with Tammany, was not renominated, ran independently for re-election, and was defeated.
A motion presented by the Socialists in the Chamber for the immediate discussion of a bill to prevent the massacres of the proletariate having been rejected by an enormous majority, the 28 Socialist deputies resigned their seats; on presenting themselves for re-election their number was reduced to 25.
Having failed to secure a re-election to the Senate in '887, Harrison was nominated by the Republican party for the presidency in 1888, and defeated Grover Cleveland, the candidate of the Democratic party, receiving 233 electoral votes to Cleveland's 168.
He was nominated by his party in 1892 for re-election, but was defeated by Cleveland, this result being due, at least in part, to the labour strikes which occurred during the presidential campaign and arrayed the labour unions against the tariff party.
All are chosen for terms of four years, and the governor, treasurer, and auditor are ineligible for immediate re-election.