Hillary Clinton maintains slight lead over Donald Trump in Quinnipiac University poll

US Republican presidential nominee Donald Trump (right) and his Democratic rival, Hillary Clinton

US Democratic presidential nominee Hillary Clinton has maintained a double-digit lead over her Republican rival, Donald Trump, in the run-up to the November election in a new national poll.

The Quinnipiac University poll, released on Thursday, shows the former secretary of state has 51 percent of the votes as compared to the New York billionaire having only a 41percent support.

Clinton has led Trump throughout most of the 2016 presidential campaign. But her lead in recent polls represents a stronger level of support than polls showed in recent editions of the poll.

In the previous polls, the former First Lady’s lead over the real estate tycoon ranged between 3 and 9. One poll -- McClatchy/Marist survey – conducted early August, however, found Clinton 15 points ahead of Trump.

Clinton's lead over Trump slimmed in the Quinnipiac University poll in a four-way match-up that included Libertarian nominee Gary Johnson and Green Party nominee Jill Stein. She received 45 percent to his 38 percent. In that scenario, Johnson earned 10 percent, while Stein bagged 4 percent.

The poll shows the billionaire with 29 percent support among millennials between the ages of 18 and 34, and 15 percent support among nonwhite voters.

Trump leads Clinton among white male voters, 59 percent to 32 percent, and voters who are 50 years of age and older.

Meanwhile, the former First Lady leads by 24 percentage points among female voters, 60 percent to 36 percent, and those younger than 50 years of age.

A majority of Americans hold a "strongly unfavorable" view of Trump, with 53 percent, while 46 percent saying the same about Clinton, showed the survey, which was conducted from August 18 to 24 among a national sample 1,498 likely voters. The poll has a 2.5 percentage point margin of error.