When it comes to social movements like this, we tend to try to identify one leader as theleader of the movement when it is really not possible to do so. The suffrage movement is a case in which this is true. Stanton was clearly a leader of the movement, but it is not clear that she was theleader.
Stanton was clearly a leader of the movement in that she is responsible for the Declaration of Sentiments that came out of the meeting in Seneca Falls. However, she was not the only major leader at that time. Women like Sojourner Truth and Susan B. Anthony were very important as well.
In addition, women's suffrage was not achieved until almost 20 years after Stanton's death. By that time, women like Alice Paul and Carrie Chapman Catt were instrumental in the movement.
Therefore, it is difficult to identify one leader as theleader of this movement.