A woman has never been president. Hillary Clinton has come the closest, but that highest, hardest glass ceiling is still intact. Now Republican Nikki Haley wants to succeed where her predecessors have not.The list of reasons a woman hasn't won is long — sexism, lack of representation in circles of power, and lack of representation in circles of money. But Nikki Haley has just scored an endorsement from the Koch Network that could change that.NPR's Mary Louise Kelly talks to Political Scientist Kira Sonbonmatsu about the inequities between men and women when it comes to fundraising and what the Koch Network endorsement could mean for Haley.Email us at considerthis@npr.org.