The answer is 1994. The first free and fair elections in Argentina were held in April 1994. In 1983, Argentina came back to a democracy. The first free elections were held to form a constituent Assembly. The Assembly reform president's term, duration of the presidency, voting system, and electoral college system etc.
In the United States? Democratic and republican, The Republican Party is right wing, and the Democratic Party is left wing... they differ on gun control, taxes, gay marriage, abortion and a lot of social issues along with economic ones