What portion of states does it take to ratify an amendment to the Constitution?
All of them
The Constitution was written in 1787, but it has changed over the years as amendments have been added. Getting an amendment to the Constitution is not easy, however. To be proposed in the first place, an amendment has to be agreed upon by two-thirds of the Senate and two-thirds of the House of Representatives or proposed by a convention of at least two-thirds of the states.
To go from proposal to ratification is even tougher: It has to be ratified by state legislatures in three-quarters of all states, or it has to be ratified by conventions in three-quarters of all states.
Answer: The correct answer is Three-quarters