The Democratic Party is a major party.
Democratic Party (Serbia) . It is the major centre-left party in Serbia , and is the fifth largest party in the National Assembly . The Democratic Party is one of the two major contemporary political parties in the United States , along with the Republican Party . Overall , the Democratic Party has retained a membership lead over its major rival the Republican Party ( GOP ) . A major party is a political party that holds substantial influence in a country 's politics , standing in contrast to a minor party .