A person who advocates for or supports a two-chambered legislative system, where a government has two separate bodies that make laws.
From 'bi-' (two) plus 'camera' (chamber) plus '-alist' (advocate). The term describes supporters of bicameral government structures like parliaments with upper and lower houses.
Bicameralists won a huge debate at the U.S. Constitutional Convention—they convinced everyone that splitting Congress into Senate and House prevented tyranny, and that system still shapes global democracy!
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