Catt led the battle for ratification of the 19th Amendment, which required the approval of 36 state legislatures (3/4 of the then 48 states.) She urged friends of the amendment not to allow it to come to a vote in their state unless they were sure it would pass. However, opponents introduced the bill into their state legislatures and, one by one, Southern states voted the measure down in Georgia, Alabama, Virginia, Maryland, South Carolina, Delaware, Florida, North Carolina, Louisiana and Mississippi. The governors of Connecticut and Vermont refused to call their legislatures into session to vote on the issue. One more state loss and the amendment would be defeated.