philadelphia head democratic party resign sunday amid furor embarrass leak email hop head grow rebellion bernie sanders supporters eve convention nominate hillary clinton white house linger bitterness heat primary campaign clinton sanders erupt 19,000 democratic national committee email leak friday confirm sanders frequent charge party play favorites race statement dnc chairwoman debbie wasserman schultz say best way party accomplish goal put clinton white house step aside convention sanders demand early day wasserman schultz resign furor blow party keen project stability contrast volatility republican candidate donald trump formally nominate raucous convention cleveland last week also overshadow preparations philadelphia clinton coronation nominee face trump nov. presidential election first woman nominate president major u.s. political party four-day democratic convention open monday good news clinton new york time report businessman former new york city mayor michael bloomberg endorse prime-time speech monday say best choice moderate voters 2016. cache email leak friday wikileaks website disclose dnc officials explore ways undermine sanders insurgent presidential campaign include raise question whether sanders jewish really atheist sanders say wasserman schultz u.s. representative florida make right decision future democratic party party leadership must also always remain impartial presidential nominate process something occur 2016 race say clinton camp question whether russians may hand hack attack party email interest help trump exchange word praise russian president vladimir putin disturb us experts tell us russian state actors break dnc steal email experts say russians release email purpose help donald trump clinton campaign chairman robby mook say cnn state union trump campaign manager paul manafort say clinton camp try distract party discord ahead convention email show clearly rig system bernie sanders ... never chance manafort say abc clinton 68 former secretary state sanders 74 independent u.s. senator vermont run president democrat wag bruise months-long battle nomination brand democratic socialist sanders galvanize young liberal voters call rein wall street eradicate income inequality sanders repeatedly voice frustration dnc party establishment felt stack resentment sanders supporters threaten disrupt convention shock disappoint sanders say email early sunday abc week email show dnc officials ponder various ways undercut sanders brad marshall dnc chief financial officer apologize facebook saturday email discuss voters upcoming nominate contest kentucky west virginia would reject atheist skate say jewish heritage marshall write may email three top dnc officials name mention sanders jewish candidate think read atheist could make several point difference peep southern baptist peep would draw big difference jew atheist clinton tell cbs 60 minutes interview air sunday read email wrong unacceptable bring religion political process email anger many sanders supporters already dismay clinton choice friday low-key u.s. senator tim kaine virginia vice presidential run mate kaine 58 could appeal independents moderate never align party liberals sanders endorse clinton speak behalf convention monday say would prefer pick u.s. senator elizabeth warren massachusetts favorite party liberal wing know tim kaine number years ... tim smart guy nice guy sanders say nbc meet press conservative would prefer see somebody like elizabeth warren select secretary clinton yes would say carry pitchfork mean portray clinton devil hundreds sanders supporters take streets philadelphia early sunday say felt betray dnc validate everything think everything believe true completely rig right begin know really everything set would win sanders supporter gwen sperling say dnc vice chairwoman donna brazile serve interim chair election dnc say twitter democrats disarray eve convention nominate clinton