Federalist leader Alexander Hamilton's death in July 1804 following the Burr–Hamilton duel destroyed whatever hope the Federalists had of defeating the popular Jefferson. Leaderless and disorganized, the Federalists failed to attract much support outside of New England. The Federalists attacked the Louisiana Purchase as unconstitutional, criticized Jefferson's gunboat navy, and alleged that Jefferson had fathered children with his slave, Sally Hemings, but the party failed to galvanize opposition to Jefferson. Jefferson's policies of expansionism and reduced government spending were widely popular. Jefferson was aided by an effective Democratic-Republican party organization, which had continued to develop since 1800, especially in the Federalist stronghold of New England.