1924 United States presidential election in New York the vote in Manhattan, Brooklyn, the Bronx, and Staten Island, and took an absolute majority of the vote in Queens. From his time as Governor of Massachusetts, Coolidge remained, for a Republican, relatively popular with Irish Catholic and other ethnic immigrant communities, helping him to hold on to New York City. Many of these voters would defect to the Democrats for Catholic New Yorker Al Smith in 1928 and become reliable Democratic voters after that. Hence 1924 remains the last election in which a Republican has won the boroughs of Manhattan, Brooklyn, and the Bronx, and also the last election
Manhattan of Greater New York", Manhattan and the Bronx, though still one county, were established as two separate boroughs. On January 1, 1914, the New York State Legislature created Bronx County, and New York County was reduced to its present boundaries. The construction of the New York City Subway, which opened in 1904, helped bind the new city together, as did additional bridges to Brooklyn. In the 1920s Manhattan experienced large arrivals of African-Americans as part of the Great Migration from the southern United States, and the Harlem Renaissance, part of a larger boom time in the Prohibition era that included