What age must a person be to be eligible to run for the U.S. Senate?

To be eligible to run for the U.S. Senate, a candidate must be at least 30 years old. This age requirement is established in the Constitution, specifically in Article I, Section 3. It reflects the Founding Fathers' intent to have a more experienced and mature body of legislators representing the states. The rationale behind setting the age at 30 encompasses the belief that individuals would have gained sufficient life experience and wisdom by that age to effectively serve in such a significant role in the federal government. Other age requirements for different offices, such as the House of Representatives, which is set at 25 years old, and the presidency, which requires candidates to be at least 35, highlight the Senate's expectation for deeper experience.