new york democratic presidential nominee hillary clinton lead republican rival donald trump increase percentage point reuters/ipsos poll release tuesday less point thursday shift come trump struggle reset campaign follow stretch controversies 42 percent likely voters favor clinton 35 percent prefer trump accord aug. 4-8 online poll 1,152 likely voters credibility interval plus minus percentage point others would either pick another candidate would vote know/refused result reflect decline support trump rather boost clinton last thursday poll 42 percent likely voters favor clinton 39 percent favor trump among register voters period clinton hold lead nearly 13 percentage point percentage point thursday accord poll five-day survey conclude mix day trump campaign squabble last week party leaders parent muslim american soldier kill iraq trump seek turn page speech outline economic platform tax break regulatory rollbacks surely unwelcome news trump campaign 50 heavyweight republican national security officials letter publish monday say trump would reckless president american history trump hit back say signatories deserve blame make world dangerous place trump face dissent within party monday former cia officer evan mcmullin announce would run independent alternative trump conservative republicans republican senator susan collins say would vote trump separate reuters/ipsos survey give respondents option choose clinton trump libertarian candidate gary johnson green party candidate jill stein clinton lead trump percentage point alternative party candidates johnson come third nearly percentage point point thursday stein percentage point aug. 4-8 survey 1,154 likely voters credibility interval percentage point mcmullin option poll clinton extend lead trump point reuters/ipsos