On the question of proportional representation, the three large states still faced opposition from the eight small states. James Wilson realized that the large states needed the support of the Deep South states of Georgia and the Carolinas. For these southern delegates, the main priority was protection of slavery. Working with John Rutledge of South Carolina, Wilson proposed the Three-Fifths Compromise on June 11. This resolution apportioned seats in the House of Representatives based on a state's free population plus three-fifths of its slave population. Nine states voted in favor, with only New Jersey and Delaware against. This compromise would give the South at least a dozen additional congressmen and electoral college votes. That same day, the large-state/slave-state alliance also succeeded in applying the three-fifths ratio to Senate seats (though this was later overturned).