Wharton Applied Economics: Tuition + health insurance + ~26K stipend for 4 years. Supposed to be pretty easy to get 5th year funding. Philly is pretty inexpensive, at least relative to NYC and Boston, so 26K is decent.
Harvard Kennedy School (Public Policy PhD): Tuition (for 4 years) + health insurance + ~24K stipend for years 1-2. RA/TA/fellowships are available for years 3-4, but they do not guarantee funding up front.