The New Deal was a 1933–1938 series of economic, social, and political reforms in response to the Great Depression in the United States under President Franklin D. Roosevelt. He introduced the phrase when accepting the Democratic Party presidential nomination in the 1932 United States presidential election, winning in a landslide over incumbent Herbert Hoover, whose administration was widely viewed as ineffective. Roosevelt attributed the Depression to inherent market instability and inadequate aggregate demand, and argued that stabilizing and rationalizing the economy required massive government intervention.