In April of 1787, The Maryland Legislature met to discuss ratification of the Constitution of the United States. During the procedings,opposition arose, requesting that ammendments be made to the constitution. Not wanting to deal with the minority request for ammendments, the effort was pushed back a few days. On the 28th a vote was taken and 63 members voted for ratification. A committtee was quickly formed to consider ammendments. The majority again did not want to hear the monority report dealing with ammendments to the constitution and decided to shelve the issue until much later in the year. In November, April of 1788 was selected to address ratification again. An election of delegate to attend a convention at Annapolis was held the 1st week of April. The convention was held on the week of the 21st-28th. The vote was held on this day in 1788, making Maryland the 7th state to ratify the Constitution.
Want to know more? Check this link: http://msa.maryland.gov/msa/mdstatehouse/html/7thstate.html