Last month, a similar poll conducted by CBS found Clinton with a six point lead over her Republican rival.
On the question of who voters find more trustworthy, Trump leads Clinton 50 percent to 37 percent, up from a virtual tie of 43 percent for Trump and 40 percent for Clinton a month ago. Libertarian candidate Gary Johnson and Green candidate Jill Stein have both been polling higher than is usual for third-party candidates.
"I personally know that I have work to do on this front", she said in Chicago last month.
Sixty-seven percent of voters say she is "not honest and trustworthy", Thursday's poll found.
Selling out is something that should not be alien to Trump, and this announcement is clearly not the last surprise he's going to get as Clinton and Sanders combine their voices and energy to derail his march to the White House.
Voters were nearly perfectly divided on whether the FBI investigation into the email scandal was fair. He says that Clinton was not formally charged after an investigation into the former Secretary of State's use of a private email server and, "Secretary Clinton herself acknowledged she would've done thinks differently". Among registered voters in Iowa who say they definitely plan to vote, one point separates Clinton and Trump.
Stein was very critical of Sanders' endorsement of Clinton, and this combined with her platform seems to have worked in her favor in terms of winning over a number of the Vermont senator's supporters.
In Ohio, Clinton and Trump are tied among the statewide electorate at 39%. "There's far too much at stake to have hurt feelings", Fetterman said.
The survey was conducted between June 30 and July 11 among about 1,000 registered voters in each of the three states and has an error margin of a little over 3 per cent. This is down from the 15 point lead Clinton had in April's NBC News/Wall Street Journal/Marist Poll. Meanwhile, the real estate magnate has a 52% to 41% advantage over Clinton on handling jobs and the economy, while voters are about evenly split on who would better handle trade, illegal immigration and terrorism.
Hillary Clinton has a new ad out that hammers Donald Trump by letting him do almost all the talking - this time, in the view of young children. Lee M. Miringoff, Director of The Marist College Institute for Public Opinion.
Democratic presidential candidate Hillary Clinton listens as Sen.