This is from wikipedia on Harry Reid, and I think most of it is backed by footnoted sources:
In 1959, Reid married his high school sweetheart, Landra Gould. They have five children, a daughter and four sons. Their eldest son, Rory Reid, is an elected Commissioner for Clark County, Nevada, and 2010 Democratic nominee in the election for Governor of Nevada. Another son recently ran for municipal office in Cottonwood Heights, Utah.[58]
Reid (who was raised agnostic) and his wife (who was born to Jewish immigrant parents and grew up in Henderson), converted to The Church of Jesus Christ of Latter-day Saints (the Mormon or LDS Church) while he was a college student.[1] In a 2001 interview he said, "I think it is much easier to be a good member of the Church and a Democrat than a good member of the Church and a Republican." He went on to say that the Democrats' emphasis on helping others, as opposed to what he considers Republican dogma to the contrary, is the reason he's a Democrat.[59] He delivered a speech at Brigham Young University to about 20,000 students on October 9, 2007, in which he expressed his opinion that Democratic values mirror Mormon values.[60][61] Several Republican Mormons in Utah have contested his faith because of his politics, such as his statements that the church's backing of California's Proposition 8 wasted resources.[62]
In September 2011, Reid's wife was diagnosed with stage 2 breast cancer. She is currently undergoing treatment