That depends which one was the original, "non-other" party. There are the dozens of political parties.
To get to the point, the two major political parties in the US are the Democratic Party and the Republican Party.
As of early 2011, there is a Democratic president, a majority of Republicans in the House of Representatives and a majority of Democrats in the Senate.
The Libertarians is the other guys. They are liberals.
The Federalist Party.
Yes, the liberty party was the first political party in the United States.
The Green Party is a third party and was formed in the US
(in the US) there is no fee to join a political party.
Democratic party
the Democratic party
The political party that was first to appear in the new US was The Federalist Party. The first two US presidents, Washington and Adams were federalists.
Political or Party Platform US Government - Nova Net
The Democratic Party.
democrats
Domocratic.