 During the debate, he joined his fellow Connecticut delegate Roger Sherman in proposing the bicameral Congress in which two members of the Senate would be elected by each state legislature, while membership in the House of Representatives would be apportioned among the states based on its share of the whole population of the states.The compromise was adopted by the Convention on July 16, 1787.On the contentious issue of whether slaves would be counted as part of the population in determining representation of the states in Congress or would instead be considered property and so not be counted, Ellsworth voted for the eventual Three-Fifths Compromise.