new york donald trump support surge run nearly even democrat hillary clinton among likely u.s. voters dramatic turnaround since become republican party presumptive presidential nominee accord reuters/ipsos poll release wednesday result could signal close fight two likely white house rival americans make mind ahead nov. election succeed democratic president barack obama recently last week clinton lead trump around 13 point poll recent survey 41 percent likely voters support clinton democratic front-runner 40 percent back trump 19 percent decide either yet accord online poll 1,289 people conduct friday tuesday poll credibility interval percentage point result reflect big increase support trump since knock u.s. senator ted cruz texas ohio governor john kasich last week become last republican white house race immediate comment clinton trump campaign clinton clinch democratic nomination rival bernie sanders mostly lead trump head-to-head poll year trump briefly match support time 2016 recently mid-march u.s. senator marco rubio florida favorite republican establishment drop exclusive trump surge support almost even clinton national u.s. poll