evidence: Since Franklin D. Roosevelt was elected president in 1932, the Democratic Party has promoted a liberal platform that includes support for Social Security and unemployment insurance.[4][20][21] The New Deal attracted strong support for the party from recent European immigrants but diminished the party's pro-business wing.[22][23][24] From late in Roosevelt's administration through the 1950s, a minority in the party's Southern wing joined with conservative Republicans to slow and stop progressive domestic reforms.[25] Following the Great Society era of progressive legislation under Lyndon B. Johnson, who was often able to overcome the conservative coalition in the 1960s, the core bases of the parties shifted, with the Southern states becoming more reliably Republican and the Northeastern states becoming more reliably Democratic.[26][27] The party's labor union element has become smaller since the 1970s,[28][29] and as the American electorate shifted in a more conservative direction following the Presidency of Ronald Reagan, the election of Bill Clinton marked a move for the party toward the Third Way, moving the party's economic stance towards market-based economic policy.[30][31][32] Barack Obama oversaw the party's passage of the Affordable Care Act in 2010. During Joe Biden's presidency, the party has adopted an increasingly progressive economic agenda.[33][34]