Organizing in 1848 at a convention in Seneca Falls, New York, and continuing into the 20th century, several generations of woman suffragists worked tirelessly for the right to vote. Over time, strategies varied: in the early 1900s some supporters tried to attain full suffrage through a constitutional amendment, while others pursued state-by-state campaigns to win suffrage incrementally. Woman suffrage was finally achieved by constitutional means in 1920 with the ratification of the 19th Amendment guaranteeing women the right to vote.