philadelphia triumphant night hillary clinton rival bernie sanders give rouse speech urge supporters vote nov. u.s. presidential election instead turn sign potential trouble white house bid speech monday democratic national convention philadelphia urge party unite republican donald trump meet jeer endorse clinton sign lose control movement beyond disappoint california delegate aleece depuey 49 say sanders seek rally support one-time rival hundreds sanders supporters march streets day one four-day convention chant want bernie delegate wear bernie bust button others don robin hood-style hat call redistribute wealth rich poor speak scuffle break sanders supporter clinton supporter hall backlash raise question whether clinton could ever win sanders supporters opinion poll show clinton-trump race tighten clinton need sanders voters ever sanders u.s. senator vermont arrive philadelphia 1,894 4,763 delegate win 13 million vote democratic nominate contest many sanders backers clinton bridge far see kind political insider back ream corporate money drive sanders fight rein wall street remove income inequality others simply trust opinion poll show reuters/ipsos poll release end june 15 percent sanders backers say would vote trump 19 percent would support neither clinton trump sanders state colorado indiana michigan new hampshire run-up convention nearly iowa state could closely contest trump general election clinton likely need portion sanders support stay competitive state clinton campaign hop philadelphia put bare-knuckle primary fight behind sanders voters enrage friday embarrass release internal party email activist group wikileaks show party officials clearly favor clinton candidate sanders supporters seem everywhere often big presence clinton supporters jar sight event due formally nominate party presidential candidate delegate welcome event sunday night shout bernie fill air supporters circulate petition force convention organizers hold extend roll-call vote floor week would require delegate declare support others pledge contest clinton choice democrat tim kaine u.s. senator virginia run mate mid-day sanders address thousand delegate city convention center crowd erupt fury ask switch allegiance clinton brothers sisters say jeer real world live trump bully demagogue people start shout back hillary sanders mention clinton already lose attention fervent fan soon say back clinton everyone stop listen say cindy melchert protester listen appeal loudspeaker local park michigan native melchert say would vote clinton november circumstances movement less sanders show democratic national committee us absolutely lose us another protester michael arnold atlanta would place trump rally sport t-shirt read hillary prison fear similar scene convention floor would embarrass clinton sanders campaign email delegate monday night program urge restrain credibility movement damage boo turn back walk similar display read sanders supporters appear will set aside qualms clinton largely desire see trump defeat election diana hatsis-neuhoff delegate florida adorn button back sanders say plan vote clinton general election yes say hold nose vote others felt fellow sanders supporters take movement far surround people selfish self-absorbed say melissa robbins work sanders campaign philadelphia vote hillary sure win donald trump may enough sway sue spic indiana say trouble imagine vote either clinton trump hard feel best interest mind say sanders army seem determine march without