Modern American liberalism:
is a form of social liberalism developed from progressive ideals such as Theodore Roosevelt's New Nationalism, Woodrow Wilson's New Freedom, Franklin D. Roosevelt's New Deal, John F. Kennedy's New Frontier, and Lyndon Johnson's Great Society. It combines social liberalism and social progressivism with support for a welfare state and a mixed economy. American liberal causes include voting rights for African Americans, abortion rights for women, gay rights and government entitlements such as education and health care.
John F. Kennedy defined a liberal as follows:
“ ..someone who looks ahead and not behind, someone who welcomes new ideas without rigid reactions, someone who cares about the welfare of the people — their health, their housing, their schools, their jobs, their civil rights, and their civil liberties — someone who believes we can break through the stalemate and suspicions that grip us in our policies abroad, if that is what they mean by a 'Liberal', then I’m proud to say I’m a 'Liberal'. "
Progressivism:
in the United States is a broadly-based reform movement that reached its height early in the 20th century and is generally considered to be middle class and reformist in nature. It arose as a response to the vast changes brought by modernization, such as the growth of large corporations and railroads, and fears of corruption in American politics. In the 21st century self-styled progressives continue to embrace concepts such as environmentalism and social justice. Social progressivism, the view that governmental practices ought to be adjusted as society evolves, forms the ideological basis for many American progressives.
One historian defined progressivism as the "political movement that addresses ideas, impulses, and issues stemming from modernization of American society. Emerging at the end of the nineteenth century, it established much of the tone of American politics throughout the first half of the century."
Conservatism:
( "to preserve" ) is a political and social philosophy that promotes the maintenance of traditional institutions and supports, at the most, minimal and gradual change in society. Some conservatives seek to preserve things as they are, emphasizing stability and continuity, while others oppose modernism and seek a return to the way things were
Robert Eccleshall states, "It is the persistent image of society as a command structure in which the responsibilities of leadership can be exercised within the framework of a strong state manifested in divine-right royalism ... that distinguishes English conservatism from rival ideologies."
Republican Party:
Founded by anti-slavery expansion activists in 1854, it is often called the Grand Old Party (GOP). The party's platform generally reflects American conservatism in the current version of the two party system, in contrast to the more "liberal" or "progressive" Democrats.
Democratic Party:
The party has the lengthiest record of continuous operation in the United States.
evolved from Anti-Federalist factions that opposed the fiscal policies of Alexander Hamilton in the early 1790s. Thomas Jefferson and James Madison organized these factions into the Democratic-Republican Party. The party favored states' rights and strict adherence to the Constitution; it opposed a national bank and wealthy, moneyed interests.
The Democratic Party has had broad appeal across all socio-ethno-economic demographics.
Historically, the party has favored farmers, laborers, labor unions, and religious and ethnic minorities; it has opposed unregulated business and finance, and favored progressive income taxes. In foreign policy, internationalism (including interventionism) was a dominant theme from 1913 to the mid-1960s. In the 1930s, the party began advocating welfare spending programs targeted at the poor.