弗吉尼亚方案
On May 29, 1787, Edmund Randolph of the Virginia delegation proposed the creation of a bicameral legislature. Under his proposal, membership in both houses would be allocated to each state proportional to its population; however, candidates for the lower house would be nominated and elected by the people of each state. Candidates for the upper house would be nominated by the state legislatures of each state and then elected by the members of the lower house. This proposal was known as the Virginia Plan.