Ratification - 9 states needed to ratify the U.S. Constitution By Bookclub Oct 15, 1787 H conceives a writing project to help NYers with the Constitution Period: Oct 15, 1787 to Aug 16, 1788 The Federalist (essays) purpose was to help ratify the US Constitution for New York H wrote with Madison and Jay and it went beyond NY Oct 27, 1787 First essay appears Dec 1, 1787 DE, PA, NJ - ratify the Constitution Jan 1, 1788 GA and Conn - ratify the Constitution Feb 6, 1788 Mass ratifies the Constitution Mar 22, 1788 The Federalist published - first volume May 1, 1788 MD, SC - ratify the Constitution May 28, 1788 The Federalist published - second volume Jun 21, 1788 NH ratifies == the 9th state!! Jun 25, 1788 VA ratifies the Constitution Jul 26, 1788 NY ratifies the Constitution smallest margin (30-27)