Scott Detrow / NPR
She's long pushed for policies like federal paid family leave, and used her political organization to try to get more women to run for office. "Sometimes people say, 'Well, why do you just focus on women's issues?' " Gillibrand told NPR in 2013. "Well, why do you focus on issues that pertain to 52 percent of the population? It's pretty important. And women are such the untapped potential in this economy."