A senate is a deliberative assembly, often the upper house or chamber of a legislature or parliament. There have been many such bodies in history, since senate means the assembly of the eldest and wiser members of the society and ruling class. Two of the first official senates were the Spartan Gerousia (Γερουσία) and the Roman Senate.

Many countries currently have an assembly named a senate, composed of senators who may be elected, appointed, have inherited the title, or gained membership by other methods, depending on the country. Modern senates typically serve to provide a chamber of "sober second thought" to consider legislation passed by a lower house, whose members are usually elected.

The modern word senate is derived from the Latin word senātus (senate), which comes from senex, "old man". The members or legislators of a senate are called senators. The Latin word senator was adopted into English with no change in spelling. Its meaning is derived from a very ancient form of simple social organization in which decision-making powers are reserved for the eldest men. For the same reason, the word senate is correctly used when referring to any powerful authority characteristically composed by the eldest members of a community, as a deliberative body of a faculty in an institution of higher learning is often called a senate. The original senate was the Roman Senate, which lasted until 580 (various efforts to revive it were made in Medieval Rome). In the Eastern Roman Empire, the Byzantine Senate continued until the Fourth Crusade, circa 1202–1204.

John Sidney McCain III (born August 29, 1936) is the senior United States Senator from Arizona. He was the Republican presidential nominee in the 2008 United States election.

McCain followed his father and grandfather, both four-star admirals, into the United States Navy, graduating from the U.S. Naval Academy in 1958. He became a naval aviator, flying ground-attack aircraft from aircraft carriers. During the Vietnam War, he was almost killed in the 1967 USS Forrestal fire. In October 1967, while on a bombing mission over Hanoi, he was shot down, seriously injured, and captured by the North Vietnamese. He was a prisoner of war until 1973. McCain experienced episodes of torture, and refused an out-of-sequence early repatriation offer. His war wounds left him with lifelong physical limitations.

He retired from the Navy as a captain in 1981 and moved to Arizona, where he entered politics. Elected to the U.S. House of Representatives in 1982, he served two terms, and was then elected to the U.S. Senate in 1986, winning re-election easily four times, most recently in 2010. While generally adhering to conservative principles, McCain at times has had a media reputation as a "maverick" for his willingness to disagree with his party on certain issues. After being investigated and largely exonerated in a political influence scandal of the 1980s as a member of the Keating Five, he made campaign finance reform one of his signature concerns, which eventually led to the passage of the McCain-Feingold Act in 2002. He is also known for his work towards restoring diplomatic relations with Vietnam in the 1990s, and for his belief that the war in Iraq should be fought to a successful conclusion. McCain has chaired the Senate Commerce Committee, opposed spending that he considered to be pork barrel, and played a key role in alleviating a crisis over judicial nominations.

The Dalai Lama is a high lama in the Gelug or "Yellow Hat" branch of Tibetan Buddhism. The name is a combination of the Sino-Mongolian word далай (dalai) meaning "Ocean" and the Tibetan word བླ་མ་ bla-ma (with a silent "b") meaning "chief, high priest".

In religious terms, the Dalai Lama is believed by his devotees to be the rebirth of a long line of tulkus who are considered to be manifestations of the bodhisattva of compassion, Avalokiteśvara. Traditionally, the Dalai Lama is thought of as the latest reincarnation of a series of spiritual leaders who have chosen to be reborn in order to enlighten others. The Dalai Lama is often thought to be the leader of the Gelug School, but this position belongs officially to the Ganden Tripa, which is a temporary position appointed by the Dalai Lama who, in practice, exerts much influence. The line of Dalai Lamas began as a lineage of spiritual teachers; the 5th Dalai Lama assumed political authority over Tibet.

For certain periods between the 17th century and 1959, the Dalai Lamas sometimes directed the Tibetan government, which administered portions of Tibet from Lhasa. The 14th Dalai Lama remained the head of state for the Central Tibetan Administration ("Tibetan government in exile") until his retirement on March 14, 2011. He has indicated that the institution of the Dalai Lama may be abolished in the future, and also that the next Dalai Lama may be found outside Tibet and may be female. The Chinese government was very quick to reject this and claimed that only it has the authority to select the next Dalai Lama.

Randal Howard "Rand" Paul (born January 7, 1963) is the junior United States Senator for Kentucky. He is a member of the Republican Party. A member of the Tea Party movement, he describes himself as a "constitutional conservative" and a libertarian. He is the son of Republican Congressman and 2012 Republican presidential candidate Ron Paul of Texas and had never previously held political office. Paul first received national attention in 2008 when making political speeches on behalf of his father. Rand Paul is the first United States Senator in history to serve alongside a parent in the United States House of Representatives.

A graduate of the Duke University School of Medicine, Paul has been a practicing ophthalmologist in Bowling Green, Kentucky, since 1993, and established his own clinic in December 2007. In 1994, he founded Kentucky Taxpayers United, of which he is still the chairman.

In 2010, Paul ran as the Republican candidate for the United States Senate seat being vacated by retiring Senator Jim Bunning of Kentucky and defeated Kentucky Attorney General Jack Conway. As a supporter of the Tea Party movement, Paul has been vocal in advocating for term limits, a balanced budget amendment, and the Read the Bills Act, in addition to the widespread reduction of federal spending and taxation. He has gained prominence for his independent positions on many political issues, often clashing with both Republicans and Democrats.

John Forbes Kerry (born December 11, 1943) is the senior United States Senator from Massachusetts, the 10th most senior United States Senator and chairman of the Senate Foreign Relations Committee. He was the presidential nominee of the Democratic Party in the 2004 presidential election, but lost to then President George W. Bush.

The son of an Army Air Corps serviceman, Kerry was born in Aurora, Colorado. He attended boarding school in Massachusetts and New Hampshire and went on to graduate from Yale University class of 1966, where he majored in political science. He enlisted in the Naval Reserve in 1966 and, during 1968-1969, served a four-month tour of duty in South Vietnam as officer-in-charge (OIC) of a Swift Boat. For that service he was awarded several combat medals that include the Silver Star, Bronze Star, and three Purple Hearts. After returning to the United States, Kerry joined the Vietnam Veterans Against the War in which he served as a nationally recognized spokesperson and as an outspoken opponent of the Vietnam war. During that period, he appeared before the Senate Committee on Foreign Affairs where he deemed United States war policy in Vietnam to be the cause of "war crimes".