1820–1821 United States House of Representatives elections in Maine

Seven seats (representing the 14th-20th districts) were reassigned from Massachusetts to Maine.In addition, under the terms of the law which admitted Maine to the union, any vacancies in the 16th Congress by Representatives elected to represent Massachusetts but residing in the new states of Maine would be filled by a resident of Maine.The vacancy was filled in a special election by Joseph Dane (Federalist).The Representatives from the 15th-20th districts were still classified as being from Massachusetts for the remainder of the 16th Congress.Maine law required a majority to win election necessitating additional ballots if a majority was not received so additional ballots were held January 22, 1821 and September 10, 1821, after the term began but before the new Congress convened.

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