On May 29, 1787 , James Madison introduced the Virginia Plan. There would be a legislative, executive, and a Judicial Branch. There would be proportional representation in both houses based on the number of people living in the state. There would be a strong government with the power to govern stuff states can't handle and veto any state laws they didn't like.
William Patterson disproved of this plan and he said he would never go along with it so he introduced the New Jersey Plan. The New Jersey plan would also have a legislative, executive, and Judicial Branch, but the government had the power to collect taxes and there would only be one vote per state no matter the size.
The two sides did not come to terms, so finally Roger Sherman presented the Connecticut Compromise or the Great Compromise. There would be a legislative, executive and judicial branch. In the Senate there would be 2 senates from each state no matter the size and there would be proportional representation in the House of Representation.