The story of the Democratic Party, from which Kamala Harris is racing for the White House, starts in the 19th century. Since its founding in 1828, America’s oldest major political party has come a long way from protecting the interests of farmers, which made it take a stance in favour of slavery, to becoming the left-of-centre voice of the nation’s politics.

Watch: Democratic National Convention: Biden urges Democrats to support Harris in race to White House