
The United States Senate is the upper house of the bicameral United States Congress, with the U.S. House of Representatives as the lower house. The composition and powers of the Senate are established in Article One of the U.S. Constitution, which has been in continuous effect since March 4, 1789. The Constitution grants Congress the sole authority to enact legislation and declare war, as well as the right to confirm or reject many Presidential appointments. The number of members in the Senate has evolved over time, with each of the 50 states currently represented by two senators serving staggered six-year terms, resulting in a Senate consisting of 100 members.
| Characteristics | Values |
|---|---|
| Number of senators | 100 |
| Number of senators per state | 2 |
| Term length | 6 years |
| Proportion of senators replaced in each general election | 1/3 |
| Minimum age to become a senator | 30 years |
| Minimum US citizenship duration to become a senator | 9 years |
| Minimum duration of residency in the state to become a senator | 1 year |
| Number of committees | 20 |
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What You'll Learn
- The US Senate has 100 members, with each state having two senators
- One-third of the Senate's members are elected or re-elected every two years
- Senators represent their entire state, with each senator representing between 0.6 and 39 million people
- Senators must be at least 30 years old and have been a US citizen for nine years
- The Senate has exclusive powers, including confirming presidential appointments and approving treaties

The US Senate has 100 members, with each state having two senators
The United States Senate is the upper house of the bicameral United States Congress, with the U.S. House of Representatives as the lower house. The US Senate has 100 members in total, with each of the 50 states being represented by two senators, regardless of the state's size or population. This means that each state elects two senators for staggered six-year terms. Senators represent between 0.6 and 39 million people, depending on their state's population.
The Senate's legislative and executive business is managed and scheduled by the Senate's majority leader, who is usually from the majority party, which is the political party that holds the most seats. The Senate's day-to-day activities are also largely controlled by the majority party.
The Constitution's framers based the Senate's three-class system on precedents established by state governments. Every two years, one-third of the Senate's members are elected (or re-elected), with senators serving staggered six-year terms. This means that one-third of the Senate's seats are filled with each general election, providing Congress with stability and continuity, and reducing the immediate pressure of public opinion on senators.
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One-third of the Senate's members are elected or re-elected every two years
The United States Senate is a chamber of the bicameral United States Congress, serving as the upper house, with the House of Representatives being the lower house. The US Constitution, which has been in continuous effect since March 4, 1789, establishes the composition and powers of the Senate. Each of the 50 states is represented by two senators who serve staggered six-year terms. This means that one-third of the Senate's members are elected or re-elected every two years, while the remaining two-thirds carry over from the previous Congress.
The Constitution's framers based this three-class system on precedents established by state governments. For instance, Delaware's senate was divided into three classes with one-third of its nine members up for reelection each year, while Virginia and New York had four classes and yearly elections. At the 1787 Constitutional Convention, delegates debated the Senate class system and term lengths. Nathaniel Gorham of Massachusetts suggested a four-year Senate term with one-fourth of the senators elected annually, while Edmund Randolph of Virginia supported a staggered rotation with seven-year terms.
The rotation of senators and the continuity provided by carrying over two-thirds of its members from one Congress to the next contribute to the Senate's character as a "continuing body." This contrasts with the House of Representatives, where all members face election every two years. The longer, overlapping Senate terms aim to provide stability and continuity to Congress and reduce the immediate pressure of public opinion on senators.
The Senate's legislative and executive business is managed by the Senate's majority leader, who may also negotiate with the Senate's minority leader. The day-to-day activities of the Senate are largely controlled by the majority party, which holds the most seats.
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Senators represent their entire state, with each senator representing between 0.6 and 39 million people
The United States Senate is the upper house of the bicameral United States Congress, with the House of Representatives as the lower house. The composition and powers of the Senate are established in Article One of the U.S. Constitution, which has been in continuous effect since March 4, 1789. The U.S. Constitution dictates that each of the 50 states is represented by two senators, who serve staggered six-year terms. This means that the Senate consists of 100 members, with each senator representing their entire state.
The number of people represented by each senator varies depending on the state's population. Senators represent between 0.6 and 39 million people. This discrepancy is due to the fact that the Senate gives two seats to each state, regardless of its population. This has resulted in a situation where, despite Republicans holding the most seats in the Senate, they only represent 46.4% of the country's population.
The Constitution's framers based the Senate's three-class system on precedents established by state governments. Every two years, one-third of the Senate's members are elected or re-elected. This rotation of senators has established the idea that the Senate is a "continuing body", in contrast to the House of Representatives, which faces elections every two years.
The Senate has several unique functions that form its ability to "'check and balance' the powers of other elements of the federal government. These include the confirmation of presidential appointments, approval of treaties, and the conviction or exoneration of impeachment cases brought by the House.
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Senators must be at least 30 years old and have been a US citizen for nine years
The United States Constitution, which has been in continuous effect since March 4, 1789, outlines specific requirements for individuals aspiring to become senators. Notably, Article I, Section 3, Clause 3 of the Constitution, known as the "Qualifications Clause," stipulates that "no person shall be a Senator who shall not have attained the age of thirty years and been nine years a citizen of the United States." This provision sets a minimum age requirement of 30 years for senators and mandates that they must have held US citizenship for at least nine years.
The Qualifications Clause, as part of the original US Constitution, was designed to ensure that individuals seeking the office of senator possessed a certain level of maturity, experience, and allegiance to the nation. The framers of the Constitution believed that these qualifications were necessary for senators, who would be entrusted with significant legislative and representational responsibilities. By setting a minimum age and citizenship requirement, the framers aimed to foster a Senate composed of individuals with a strong foundation of knowledge, wisdom, and loyalty to the country they would serve.
The age and citizenship requirements for senators have remained unchanged since the ratification of the Constitution. Throughout US history, these qualifications have been consistently applied to ensure that only those who meet the established criteria can serve in the Senate. This consistency underscores the importance placed on maturity and established citizenship as fundamental prerequisites for the role of senator. The Qualifications Clause has been instrumental in shaping the composition of the Senate and continues to guide the eligibility criteria for senatorial candidates.
It is worth noting that the Constitution also outlines other requirements for senators beyond age and citizenship. For instance, senators must be inhabitants of the states for which they are chosen. Additionally, the Constitution addresses the rotation of senators, with one-third of the Senate's membership being elected or reelected every two years. This staggered election system ensures continuity and stability within the Senate, allowing for a "continuing body" dynamic that distinguishes it from the House of Representatives, where elections occur every two years for all members.
In summary, the US Constitution's stipulation that "Senators must be at least 30 years old and have been a US citizen for nine years" has been a foundational element of senatorial qualifications since the nation's earliest days. This requirement reflects the framers' intention to establish a Senate composed of experienced, mature, and committed individuals who can effectively represent their respective states and carry out their legislative duties with wisdom and dedication. The age and citizenship requirements continue to play a pivotal role in shaping the membership of one of the country's most influential legislative bodies.
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The Senate has exclusive powers, including confirming presidential appointments and approving treaties
The United States Senate is the upper house of the bicameral United States Congress, with the U.S. House of Representatives being the lower house. The composition and powers of the Senate are established in Article One of the U.S. Constitution, which has been in continuous effect since March 4, 1789. Each of the 50 states is represented by two senators serving staggered six-year terms, resulting in a total of 100 senators.
The role of the Senate in confirming presidential appointments is crucial. The Senate's advice and consent are required for the appointment of ambassadors, public ministers, consuls, Supreme Court justices, and other officers. The Senate conducts hearings and considers nominations, with the majority of nominees being confirmed. However, in some cases, Senate committees may deliberately fail to act on a nomination to block it.
Additionally, the Senate plays a significant role in approving treaties. According to the Constitution's treaty clause, the President has the power to make treaties with the advice and consent of the Senate, provided that two-thirds of the Senators present concur. This clause ensures that treaties are ratified by a two-thirds supermajority vote in the Senate.
The Senate's exclusive powers, including confirming presidential appointments and approving treaties, provide a check and balance on the powers of the executive and judicial branches of the government. The framers of the Constitution intended to prevent the concentration of power in a single branch, promoting a balanced and democratic system of governance.
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Frequently asked questions
The United States Senate consists of 100 members, two from each of the 50 states.
The delegates set age, citizenship, and inhabitancy qualifications for senators but voted against proposed religion and property requirements. The minimum age requirement to become a senator is 30 years.
The Senate has the power to confirm U.S. presidential appointments, approve or reject treaties, and convict or exonerate impeachment cases brought by the House. The Senate also has the power to override a veto by a two-thirds vote.

























