Harry Reid is the senior United States Senator from Nevada, serving since 1987. A member of the Democratic Party, he has been the Senate Majority Leader since January 2007, having previously served as Minority Leader and Minority and Majority Whip.

Previously, Reid was a member of the U.S. House of Representatives, representing Nevada's 1st congressional district, and served in Nevada local and state government as city attorney of Henderson, a state legislator, the 25th Lieutenant Governor, and chairman of the Nevada Gaming Commission.

Reid has scored a lifetime conservative rating of 19% from the American Conservative Union (ACU), and a 2008 liberal rating of 70% from the Americans for Democratic Action (ADA). Other independent ratings include a 29% rating in 2003 from NARAL, the abortion pro-choice group, and a 57% rating from Planned Parenthood in 2006.

Reid has spearheaded several initiatives while in Congress. In 2006, Reid co-sponsored the "Prevention First Amendment" with Hillary Clinton, which would fund abortion prevention efforts, such as giving women broader access to contraception; however the bill faced Republican opposition and failed. In January 2007, Reid brought a Senate ethics reform bill to a vote to bar congressional members from accepting gifts, meals, and trips from lobbyists and organizations employing them, as well as barring Senators from borrowing corporate jets for travel and compelling them to disclose the names of sponsors, or authors, of bills and specific projects. The bill passed 96–2. In the 111th Congress, Reid shepherded the Patient Protection and Affordable Care Act through the Senate.

Regarding specific issues, Reid believes that Roe vs. Wade should be overturned and in 1999, he voted against an amendment that explicitly expressed support for Roe v. Wade. He has stated that he believes in a restricted right to abortion, stating that "abortions should be legal only when the pregnancy resulted from incest, rape, or when the life of the woman is endangered." He has also voted several times to ban the "intact dilation and evacuation" or "partial-birth abortion" procedure.[16] Reid has supported embryonic stem cell research.

Regarding same-sex marriage, Reid has stated he believes "...marriage should be between a man and a woman." He voted in favor of the Defense of Marriage Act but against the Federal Marriage Amendment.

In regard to local issues, Reid has firmly opposed the proposed Yucca Mountain federal nuclear waste repository in Nevada. Reid has opposed the legalization of online poker in the past, but has more recently changed his position, a move that some have argued was influenced by "the hundreds of thousands of dollars Las Vegas casinos contributed to his re-election campaign".

Reid called immigration reform one of his top priorities for the 110th Congress. He supports the DREAM Act the (Development, Relief and Education for Alien Minors Act), which would allow certain U.S. high school grads who had arrived in the U.S. illegally as children, conditional legal status so they could attend college or enlist in the military. They could then obtain permanent legal residency after completing two years of military service or two years of college. In June 2009, Reid announced his intention to enact a new guest worker program as part of a comprehensive immigration reform bill.

Reid has supported the use of force in the Middle East but in September 2007 he called for a drastic change in strategy.[citation needed] In January 1991 he voted to authorize the first Gulf War. quoting John F. Kennedy's 1963 State of the Union speech on the Senate floor, saying "the mere absence of war is not Peace." He also voted in support of the 2003 invasion of Iraq. In March 2007 he voted in favor of "redeploying U.S. troops out of Iraq by March 2008", and later that year, he said, "As long as we follow [President Bush's] path in Iraq, the war is lost."

Reid has also advocated the outlawing of prostitution in Nevada, an unpopular position within the state.

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. 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. 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. 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.