These are tables of congressional delegations from Maine to the United States Senate and United States House of Representatives. The current dean of the Maine delegation is Senator Susan Collins, having served in the Senate since 1997. U.S. Senate U.S. House of Representatives Current members Historical delegations 1819–1821: 1 seat 1821–1833: 7 seats 1833–1843: 8 seats 1843–1853: 7 seats 1853–1863: 6 seats 1863–1883: 5 seats 1883–1933: 4 seats 1933–1963: 3 seats 1963–present: 2 seats Key See also List of United States congressional districts Maine's congressional districts Political party strength in Maine References Congressional Biographical Directory of the United States 1774–present Information from the Clerk of the U.S. House of Representatives Maine Congressional delegations Politics of Maine