By virtually any metric, the United States Senate is one of the most undemocratic legislative bodies in the advanced capitalist world. Given the geographic distribution of America’s population, the majority living in nine states wields a mere eighteen votes to the minority’s eighty-two: a balance of forces so disproportionate, most citizens of other countries would probably find it incomprehensible. In no other country could a jurisdiction the size of California (home to nearly 40 million people) possess the same legislative clout as Wyoming (home to less than 600,000). The Senate, in fact, is not so much undemocratic as it is antidemocratic — its design acting as a check on majority rule by default.

Source: Ending the Filibuster Is About Defending Democracy