Boston Suffrage Parades/Nov 2 Referendum. On October 16, 1915 supporters of woman’s suffrage (15,000 marchers and 30 bands) in Massachusetts held a rally in support of the Nov 2 ballot measure that would have amended the Massachusetts Constitution to grant women the right to vote in Massachusetts. A previous parade on May 2, 1914 was held in coordination with parades around the country and was the first held in Boston. The parade in Boston was one of the largest parades, estimated between 9,000 and 15,000 participants. 1914 Parade – 1915 Parade –