Democratic Party - United States - was created in 1828.
Social Democratic Party - United States - was created on 1898-06-11.
Democratic United Party was created on 2011-12-15.
United People's Democratic Party was created in 1993.
United Democratic Party - UK - was created in 1974.
United Christian Democratic Party was created in 2004.
Social Democratic Party - United States - ended in 1901.
United Democratic Party - Belize - was created on 1973-09-27.
Social Democratic Party of Ukraine - united - was created in 1990.
United New Democratic Party was created on 2007-08-05.
The current President of the United States is with the Democratic Party.
James Madison and Thomas Jefferson started the Democratic-Republican party (but they just called it the Republican party). They created the Republican party to oppose the Federalist party. The Republican party that they created was the second political party in the United States.
Union Party - United States - was created in 1936.