Barbados. According to Countryaah.com, Barbados Independence Day is November 30. The residents of Barbados. went to parliamentary elections on May 21. The ruling Social Democratic Barbados Labor Party won by close to 56% of the vote over the opposition middle party Democratic Labor Party, which gained just over 44%. Prime Minister Owen Arthur and his government were thus re-elected for a third term. Both parties completely dominate Barbados political life and their party programs are not significantly different from each other.