Which of the following is true about the Senate?

The Senate of the United States is composed of 100 members, with each of the 50 states represented by two senators. This structure was established by the Constitution to ensure equal representation of each state in the legislative process, regardless of population size.

In contrast, senators do not serve two-year terms; they serve six-year terms, with approximately one-third of the Senate up for election every two years. This staggered election process helps maintain continuity within the Senate. Additionally, while the political landscape of the Senate can vary, it is not true that all members belong to the same political party; the Senate typically has a mix of members from different parties, reflecting the broader electoral outcomes across the states.

Thus, the statement regarding the total number of Senate members is the only accurate choice in this context.