I am in the Democratic party ,an opposition party currently
Is that so? I'm not an American, but I know that the Democratic Party is one of the two major political parties in the U.S.
So who are the founders of the American Democratic party?
Democratic Party (United States)
The Democratic Party is one of the two major contemporary political parties in the United States, along with its rival, the Republican Party. Tracing its heritage back to Thomas Jefferson and James Madison's Democratic-Republican Party, the modern-day Democratic Party was founded around 1828 by supporters of Andrew Jackson, making it the world's oldest active political party. 
In its early years, the Party supported limited government, state sovereignty and opposed banks and the abolition of slavery. Since Franklin
decades, control of the governorship frequently shifted between the two parties. From 1899 to 1939, almost all governors were Republican, but since that time the governorship has switched parties regularly.
Political parties.
The two major political parties in California that currently have representation in the State Legislature and U.S. Congress are the Democratic Party and the Republican Party. There are four other parties that qualify for official ballot status: the American Independent Party, Green Party, Libertarian Party, and Peace and Freedom Party.
Of the 19,696,371