Party leaders of the United States Senate in the context of "Government Accountability Office"

Robert Alphonso Taft Sr. (September 8, 1889 – July 31, 1953) was an American politician, lawyer, and scion of the Republican Party's Taft family. Taft represented Ohio in the United States Senate, briefly served as Senate majority leader, and was a leader of the conservative coalition of Republicans and conservative Democrats who blocked expansion of the New Deal. Often referred to as "Mr. Republican", he co-sponsored the Taft–Hartley Act of 1947, which banned closed shops, created the concept of right-to-work states, and regulated other labor practices.

The elder son of William Howard Taft, the 27th president of the United States and 10th chief justice of the United States, Robert Taft was born in Cincinnati, Ohio. He pursued a legal career in Cincinnati after graduating from Harvard Law School in 1913. With his brother Charles Phelps Taft II, he co-founded the law partnership of Taft Stettinius & Hollister. Taft served in the Ohio House of Representatives from 1921 to 1931 and in the Ohio Senate from 1931 to 1933. Though he lost re-election in 1932, he remained a powerful force in state and local politics.

Lyndon Baines Johnson (/ˈlɪndən ˈbeɪnz/; August 27, 1908 – January 22, 1973), also known as LBJ, was the 36th president of the United States, serving from 1963 to 1969. He became president after the assassination of John F. Kennedy, under whom he had served as the 37th vice president from 1961 to 1963. A Southern Democrat, Johnson previously represented Texas in Congress for over 23 years, first as a U.S. representative from 1937 to 1949, and then as a U.S. senator from 1949 to 1961.

Born in Stonewall, Texas, Johnson worked as a teacher and a congressional aide before winning election to the U.S. House of Representatives in 1937. In 1948, he was controversially declared the winner in the Democratic primary for the U.S. Senate election in Texas before winning the general election. He became Senate majority whip in 1951, Senate Democratic leader in 1953 and majority leader in 1954. Senator Kennedy bested Johnson and his other rivals for the 1960 Democratic presidential nomination before surprising many by offering to make Johnson his vice presidential running mate. The Kennedy–Johnson ticket won the general election. Vice President Johnson assumed the presidency in 1963, after President Kennedy was assassinated. The following year, Johnson won reelection to the presidency in a landslide, winning the largest share of the popular vote for the Democratic Party in history, and the highest for any candidate since the advent of widespread popular elections in the 1820s.

Below is a list of U.S. senators who have represented the State of New York in the United States Senate since 1789. The date of the start of the tenure is either the first day of the legislative term (senators who were elected regularly before the term began), or the day when they took the seat (U.S. senators who were elected in special elections to fill vacancies, or after the term began). New York's current U.S. senators are Democrats Chuck Schumer (serving since 1999, also serving as Senate Minority Leader since 2017, and the longest serving senator in the state) and Kirsten Gillibrand (serving since 2009).

Party leaders of the United States House of Representatives, also known as floor leaders, are congresspeople who coordinate legislative initiatives and serve as the chief spokespersons for their parties on the House floor. These leaders are elected every two years in secret balloting of their party caucuses or conferences: the House Democratic Caucus and the House Republican Conference. Depending on which party is in power, one party leader serves as majority leader and the other as minority leader.

Unlike the Senate majority leader, the House majority leader is the second highest-ranking member of their party's House caucus, behind the speaker of the House. The majority leader is responsible for setting the annual legislative agenda, scheduling legislation for consideration, and coordinating committee activity. The minority leader serves as floor leader of the opposition party, and is the minority counterpart to the speaker. The minority leader also speaks for the minority party in the House and its policies, and works to protect the minority party's rights.

Joseph Taylor Robinson (August 26, 1872 – July 14, 1937) was an American politician who served as United States Senator from Arkansas from 1913 to 1937, serving for four years as Senate Majority Leader and ten as Minority Leader. A member of the Democratic Party, he previously served as the state's 23rd governor, and was also the Democratic vice presidential nominee in the 1928 presidential election.

After studying law at the University of Virginia, Robinson returned to Arkansas, winning election to the Arkansas General Assembly. He won election to the United States House of Representatives, serving from 1903 to 1913. He won election as governor of Arkansas in 1912, but resigned from that position in 1913 to take a seat in the Senate. In the Senate, Robinson established himself as a progressive and strong supporter of President Woodrow Wilson. Robinson served as the chairman of the 1920 Democratic National Convention and won election as the Senate Minority Leader in 1923. He sought the Democratic presidential nomination in the 1924 election and was nominated as the Democratic vice presidential nominee in 1928. The Democratic ticket of Al Smith and Robinson lost in a landslide to the Republican ticket of Herbert Hoover and Charles Curtis.

Robert Joseph Dole (July 22, 1923 – December 5, 2021) was an American politician, attorney, and U.S. Army officer who represented Kansas in the United States Senate from 1969 to 1996. He was the Republican Leader of the U.S Senate during the final 11 years of his tenure, including three non-consecutive years as Majority Leader of the U.S. Senate. Prior to his 27 years in the Senate, he served in the United States House of Representatives from 1961 to 1969. Dole was also the Republican presidential nominee in the 1996 presidential election and the vice presidential nominee in the 1976 presidential election.

Dole was born and raised in Russell, Kansas, where he established a legal career after serving with distinction in the United States Army during World War II. Following a period as Russell County, Kansas Attorney, he won election to the House of Representatives in 1960. In 1968, Dole was elected to the Senate, where he served as chairman of the Republican National Committee from 1971 to 1973 and chairman of the United States Senate Committee on Finance from 1981 to 1985. He led the U.S. Senate Republican members from 1985 to his resignation in 1996, and served as Senate Majority Leader from 1985 to 1987 and from 1995 to 1996. In his role as Republican leader, he helped defeat the Clinton health care plan of 1993, proposed by Democratic president Bill Clinton.

Charles Linza McNary (June 12, 1874 – February 25, 1944) was an American Republican politician from Oregon. He served in the U.S. Senate from 1917 to 1944 and was Senate Minority Leader from 1933 to 1944. In the Senate, McNary helped to pass legislation that led to the construction of Bonneville Dam on the Columbia River, and worked on agricultural and forestry issues. He also supported many of the New Deal programs at the beginning of the Great Depression. Until Mark Hatfield surpassed his mark in 1993, he was Oregon's longest-serving senator.

McNary was the Republican vice presidential candidate in 1940, on the ticket with presidential candidate Wendell Willkie; both died in 1944, during what would have been their first term had they won. They lost to the Democratic ticket, composed of Franklin D. Roosevelt, who was running for his third term as president, and Henry A. Wallace, by just under a ten-point margin.