philadelphia twelve years ago barack obama electrify speech democratic national convention bring tear andrew gillum eye mayor tallahassee florida view rise star state gillum hesitate ask name political role model elizabeth warren reply refer firebrand u.s. senator massachusetts 37-year-old african-american mayor southern u.s. city identify warren political lodestar speak volumes democratic party progressive shift even hillary clinton officially become presidential nominee quarter-century public eye party transition clinton 1990s-era brand democratic centrism slowly eclipse wave progressivism personify warren u.s. senator bernie sanders rival clinton endorse month although sanders insurgent presidential bid fell short leave supporters bitterly disappoint new crop democratic candidates seem determine carry work warren 67 putative leader like obama 2004 gillum many others philadelphia convention seek boost profile raise cash network fellow democrats buoy adoption progressive platform party history plank debt-free college expand social security benefit tax carbon emissions clinton move leave embrace many cause separate moderate brand democratic politics personify husband former president bill clinton pro-free trade friendly wall street emphasize budget discipline appeal sanders supporters speech accept party presidential nomination thursday pledge work progressive issue let go make happen together clinton say sarah lloyd 44 congressional candidate wisconsin support sanders say energy come folks bring process sanders campaign .... positive thing party sanders warren take lead shape democrats next generation formerly professor law warren conceive set consumer financial protection bureau form 2011 president obama launch political action committee back democratic candidates inspire advocacy group progressive change campaign committee solicit donations bloc term party warren wing speaker convention florida gillum frustrate sanders seem disinterested help democratic candidates contrast warren senator sanders content movement gillum say revolution bring people along you warren committee donate campaign u.s. senate hopefuls kamala harris 51 california jason kander 35 missouri catherine cortez masto 52 nevada wisconsin lloyd oppose trans-pacific partnership global trade deal split progressive moderate elements party pccc slate warren wing candidates support 15-an-hour minimum wage campaign-finance reform tight rule wall street one slate zephyr teachout candidate u.s. house representatives new york campaign t-shirt read elizabeth warren wing party endorse sanders rise important populism talk money politics talk trade talk economic issue teachout 44 tell reuters within party across board serious rethink trade rethink big bank rethink monopolies much power tulsi gabbard u.s. representative hawaii often mention sanders supporters one could assume mantle cable-news regular gabbard 35 one sanders supporters offer convention speak slot onstage formally nominate sanders president say become voice millions connect seamlessly laborers rust belt environmentalists west rise democratic progressives frequently cite strategists include julian castro 41 u.s. house secretary twin brother representative joaquin castro texas former ohio state senator nina turner 48 u.s. senate candidate pramila jayapal 50 washington former south carolina lawmaker bakari sellers 31. harris might one shine bright california attorney general harris mention potential u.s. presidential candidate u.s. supreme court justice win senate race november enjoy support warren obama vice president joe biden former new york city mayor michael bloomberg republican-turned-independent suggest appeal party liberal moderate flank join force bloomberg crusade tight gun laws bond warren help homeowners struggle foreclosure crisis late 2000s join obama efforts overhaul criminal justice system tend treat black citizens harshly white ones one campaign ad warren view say kamala harris fearless harris turn back clinton interview reject idea party leave clinton behind even nominate president strongly believe two generations much common separate term fundamental value harris say inspiration new democratic star look elizabeth warren