Answer: Delaware and Rhode Island
During the Connecticut Compromise, it was decided that the House of Representatives would have representation based on population. This means that states with larger populations (such as Virginia) would have more representatives than states with small populations. On the other hand, the Senate was to operate under equal representation. In other words, each state would have the same amount of senators, regardless of its population.
Small states would be most likely to support equal representation like that of the Senate because it would put them at the same level as highly populated states, despite their low population.