Hillary Clinton leads Donald Trump by 6 points, according to a national Fox News poll released Wednesday that showed Mr. Trump losing 7 points of support since mid-May.
Mrs. Clinton, the likely Democratic presidential nominee, led Mr. Trump, the presumptive GOP nominee, by a 44 percent to 38 percent margin in the poll.
Mr. Trump had led Mrs. Clinton by 3 points, 45 percent to 42 percent, in May. Mrs. Clinton had held a 3-point, 42 percent to 39 percent lead in a poll taken in early June.
In the new poll, Mrs. Clinton led by 19 points among women, 51 percent to 32 percent, while Mr. Trump had a 10-point, 46 percent to 36 percent lead among men.
Mrs. Clinton also led among African Americans (87 percent to 3 percent), voters under age 45 (45 percent to 35 percent) and among those earning less than $50,000 annually (52 percent to 30 percent).
Mr. Trump, meanwhile, led among whites (48 percent to 34 percent), independents (39 percent to 31 percent), white evangelical Christians (66 percent to 18 percent), whites without a college degree (51 percent to 33 percent) and gun owners (52 percent to 30 percent).
Since May, Mr. Trump has lost support among Republicans (-8 points), whites without degrees (-10 points) and men (-9 points).
Seventy-four percent of Republicans support him, down from 82 percent in May. And 51 percent of Republicans said they’d prefer a different nominee, compared to 48 percent who said they’d rather have Mr. Trump.
Meanwhile, 83 percent of Democrats supported Mrs. Clinton in the poll. By a 21-point margin, Democrats said they prefer Mrs. Clinton (58 percent) as the party’s nominee to Sen. Bernard Sanders (37 percent).
Issues of honest and trustworthiness continue to dog Mrs. Clinton, however. Just 30 percent said they think she’s “honest and trustworthy,” compared to 34 percent for Mr. Trump.
Fifty-eight percent also described Mrs. Clinton as “corrupt,” compared to 45 percent who said the description fit Mr. Trump.
In a hypothetical three-way contest, Mrs. Clinton was at 41 percent, Mr. Trump was at 36 percent, and Libertarian Party nominee Gary Johnson was at 10 percent.
On a generic congressional ballot question, 41 percent preferred the Democratic candidate, and 36 percent preferred the Republican candidate.