new york republican presidential candidate donald trump trail democratic rival hillary clinton 12 percentage point reuters/ipsos poll release friday make clear underdog ahead next week republican national convention forty-five percent likely voters support former secretary state clinton 33 percent support trump wealthy businessman remainder support neither accord july 11-15 online poll survey show little change tuesday clinton lead trump 13 percentage point clinton ahead poll since early january trump approach level support may last two remain rival quit race become presumptive republican nominee trump favorability drop since campaign begin focus nov. general election trump face criticism recent weeks now-defunct trump university venture accuse make false promise anti-immigrant anti-muslim rhetoric poll result mostly gather thursday night deadly truck attack nice france trump announcement friday indiana governor mike pence would vice presidential run mate poll result suggest clinton use personal email government business secretary state handle classify information damage support among likely voters poll show close race cbs news/ny time telephone poll candidates tie 40 percent mcclatchy/marist telephone poll clinton lead percentage point 42 percent trump 39 percent trump may get bump poll follow next week convention cleveland party expect rally behind nominee 2012 support republican nominee mitt romney rise percentage point follow convention year democratic convention set follow week open july 25 philadelphia reuters/ipsos poll survey 1,186 likely voters across continental unite state alaska hawaii credibility interval measure accuracy percentage point clinton lead trump 12 point ahead republican convention reuters/ipsos poll