The Democratic candidates for mayor of New York City face off for a debate on Aug. 21. From left: Anthony Weiner, Sal Albanese, John Liu, Christine Quinn, Bill Thompson, Erick Salgado and Bill de Blasio.
Ruth Fremson/New York Times/AP
Losia Nyankale helps daughter Jonessa and son Juliean learn the alphabet. Nyankale, who works in a restaurant in Washington, D.C., says she needs food stamps and child-care subsidies to make ends meet.