New Jersey was won by the Democratic nominees, incumbent President Franklin D. Roosevelt of New York and his running mate Senator Harry S. Truman of Missouri.

In North Jersey, Roosevelt maintained his dominance in heavily populated Hudson County, part of the New York City metro area where the New Deal Coalition was very strong, breaking 60% of the vote in the county for the fourth election in a row.

Roosevelt had carried the state in the midst of all three of his preceding nationwide victories, but with the exception of his 1936 landslide, always by very narrow margins.

As Roosevelt decisively won re-election to an unprecedented fourth term, carrying 36 out of 48 states, New Jersey was his second-narrowest victory in the nation.

FDR's close 1.35% margin of victory in New Jersey made the state about 6% more Republican than the national average.