ellen fitzpatrick, welcome. >> thank you, nice to be here. >> woodruff: so there have been a lot of bookswritten about women in politics, but you specifically wanted to focus on women going after the top job, the president similar why? >> well, there had been very little i noticed done on the subject. there had been a lot of books about the idea of a woman president, but no historian had really looked at this question, no academic historian. it had sort of fallen between the crevices. on the one hand, there's so much presidential history. on the other handti there's a lt of wonderful work in women's history.y. but women presidential candidates had largely been shungted aside. >> woodruff:, right -- right now hillary clinton is if front-runner for the democratic nomination. the three women you focus on were women who because of the time they went for the presidency, it was a very different environment. why did you pick these three and start with victoria woodhull, 1872. >> remarkable.18 she emerged during reconstruction, which was the period after the civil war when many questions were bei