Today, the House Democratcaucus is composed mostly of progressives and centrists,[with a smaller minority of conservative Democrats. The party's philosophy of modern liberalism advocates social and economic equality, along with the welfare state. It seeks to provide government intervention and regulation in the economy. These interventions, such as the introduction of social programs, support for labor unions, affordable college tuitions, moves toward universal health care and equal opportunity, consumer protection and environmental protection form the core of the party's economic policy. The party has united with smaller liberal regional parties throughout the country, such as the Farmer–Labor Party in Minnesota and the Nonpartisan League in North Dakota.
Well into the 20th century, the party had conservative pro-business and Southern conservative-populist anti-business wings. The New Deal Coalition of 1932–1964 attracted strong support from voters of recent European extraction—many of whom were Catholics based in the cities. After Franklin D. Roosevelt's New Deal of the 1930s, the pro-business wing withered outside the South. After the racial turmoil of the 1960s, most Southern whites and many Northern Catholics moved into the Republican Party at the presidential level. The once-powerful labor union element became smaller and less supportive after the 1970s. White Evangelicals and Southerners became heavily Republican at the state and local level in the 1990s. Racial and ethnic minorities in the U.S., such as Jewish Americans, Hispanic Americans, Arabic Americans and African Americans, tend to support the Democratic Party much more than they support the rival Republican Party, giving the Democratic Party its current membership lead over the Republicans.