Hubert Humphrey was baptized and raised as Lutheran. He attended a Methodist church while growing up because there was no Lutheran church in his town. He was reportedly a Congregationalist as an adult.
From: Political Graveyard website (http://politicalgraveyard.com/bio/humphrey.html#R9M0J1FB0; viewed 29 November 2005):
Humphrey, Hubert Horatio, Jr. (1911-1978) - also known as Hubert H. Humphrey; "H.H.H."; "The Happy Warrior"; "The Hump" - of Minneapolis, Hennepin County, Minn. Born in Wallace, Codington County, S.Dak., May 27, 1911. Married, September 3, 1936, to Muriel Fay Buck; father of Hubert Horatio Humphrey III. Pharmacist; delegate to Democratic National Convention from Minnesota, 1944, 1948, 1960; mayor of Minneapolis, Minn., 1945-48; U.S. Senator from Minnesota, 1949-64, 1971-78; died in office 1978; candidate for Democratic nomination for Vice President, 1956; candidate for Democratic nomination for President, 1960, 1972; Vice President of the United States, 1965-69; Democratic candidate for President of the United States, 1968. Congregationalist. Member, Americans for Democratic Action; Council on Foreign Relations; Freemasons; Knights Templar; Knights of Pythias. Awarded the Presidential Medal of Freedom posthumously in 1980. Died, of cancer, at Waverly, Wright County, Minn., January 13, 1978. Interment at Lakewood Cemetery, Minneapolis, Minn.From: Peter Roberts, "Hubert Horatio Humphrey" page in "God and Country" section of "Science Resources on the Net" website (http://www.geocities.com/peterroberts.geo/Relig-Politics/HHHumphrey.html; viewed 29 November 2005):
Religious Affiliation: Lutheran?, Methodist?, Congregationalist?
Summary of Religious Views:
Humphrey was raised in a Lutheran family, but, because there was no Lutheran church in his hometown, he and his family attended a Methodist church. As an adult, he liked to attend church with his children when he could.
Quotations: "I was baptized in the Highland Lutheran church in a rural section just north of Lily, South Dakota. It just so happened when we moved to Doland, South Dakota, that there was no Lutheran church and our family affiliated with the Methodist church." -- letter to Rev. Tenner Thompson, March 1945
"I attended church as a boy, primarily at mother's insistence, but also because I liked it and because Julian Hartt, the minister's son, was a close friend. In 1922, on the day Ralph and I were baptized, my father, then forty, joined the church." -- The Education of a Public Man: My Life and Politics, 1976, p. 29
"On one occasion, a traffic policeman in handing out a ticket called the violator a 'dirty Jew.' I suspended him for fifteen days without pay. I tried with far less success to stop the verbal abuse of Negroes." -- The Education of a Public Man: My Life and Politics, 1976, p. 99