Describe the core beliefs of the Democratic party

The core belief of Democratic party is liberalism.

Explanation:

Liberalism is a political and moral philosophy based on freedom, consent of the governed and equality before the law. Liberals generally support free market, free trade, limited government, individual rights (including civil rights and human rights), capitalism, democracy, secularism, gender equality, racial equality, internationalism, freedom of speech, freedom of the press and freedom of religion.

It advocates for the freedom of a common man under law.