philadelphia chelsea clinton take stage democratic national convention thursday portray mother hillary clinton love smart playful woman qualify elect president unite state 12-minute introduction receive warmly pack philadelphia arena chelsea clinton counter criticism mother untrustworthy politician struggle show compassion front american voters woman drive compassion faith fierce sense justice heart full love child presidential hopeful hillary clinton former u.s. president bill clinton tell crowd hillary clinton take stage minutes late become first woman accept presidential nomination major u.s. party chelsea clinton 36-year-old mother two last series speakers four-day gather seek cast hillary clinton familial light ahead nov. election republican donald trump call mother wonderful thoughtful hilarious person make time childhood attend dance piano recitals gaze sky find shape cloud feel value love mom want every child call life chelsea clinton say president barack obama first lady michelle obama vice president joe biden also give speeches support clinton cast qualify oval office experience former secretary state u.s. senator first lady also loyalty passion chelsea clinton public eye since childhood white house take low profile father leave office 2001. marry investment banker marc mezvinsky serve vice chair clinton foundation charity mother presidential bid re-enter public life hit campaign trail endear supporters stories clinton mother grandmother children charlotte age come september aidan bear june trump also rely children soften image eldest daughter ivanka speak republican national convention cleveland last week depict new york businessman color-blind gender-neutral counter critics call comment immigrants women bigoted callous candidates children say friends relationship strike parent launch campaign white house daughter chelsea cast clinton great mom drive public servant