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(1792-1864), Vice-President of the United States, had a training in diplomacy and law, was mayor of Philadelphia, and district attorney. From 1831 to 1833 he was U. S. Senator from Pennsylvania, and was Attorney-General of the State in the two succeeding years. In 1837-39 he was U. S. Minister to Russia. When Polk was nominated by the Democrats in 1844, Dallas received the second honor, as a kind of protectionist gift to hold Pennsylvania. They were elected, and Dallas served as Vice-President 1845-49. In spite of his supposed protectionist learnings Dallas gave the casting vote in the Senate in favor of the Walker Tariff of 1846. His last public office was that of Minister to England in 1856-61.