The chances of getting approval from the state legislatures was not sure, it was also believed that approval by the people of the would have a better constitutional and moral backing/support.
Explanation:
Ratification by people is a process usually adopted by government or political leaders in order to get the popular support of the people, it is known to have a stronger legal and moral authority, as it is believed that the power belongs to the people.
THIS PROCESS OF GETTING THE APPROVAL OF THE POPULARLY ELECTED STATE CONVENTION WAS ACTUALLY CALLED FOR IN ARTICLE VII OF THE CONSTITUTION.
