Republican candidate Donald Trump has opened up a seven percentage point lead nationwide over his Democratic rival Hillary Clinton, according to a poll released Sunday.



Trump holds a 48 percent to 41 percent advantage over Clinton according to the Los Angeles Times/USC Dornsife poll. The survey marks a sharp contrast from the same poll just one week ago, which had Clinton holding a slim advantage over Trump.

Other results from the survey indicate:

Voters under the age of 35 showed a dramatic change in opinion, as just a few weeks ago Clinton held a 10-point lead over Trump, but now the real estate mogul has taken an 8-point advantage among that group.

Trump's support among those with a high school education or less has surged to 21 percent advantage, after it was a just a single-digit margin a few weeks ago.

Male backing of Trump has also increased significantly, as the gap has now widened to more than 20 points after being only half that a few weeks ago

Black support for Trump, which was a just three percent last week, has taken a leap to more than 20 percent, although Clinton still leads in that category with more than 70 percent.

The survey was conducted after Clinton was filmed stumbling into a Secret service vehicle after leaving a Sept. 11 memorial service and was later said to be suffering from pneumonia.

The USC Dornsife/Los Angeles Times poll tracks about 3,000 eligible voters until election day, asking on a regular basis about their support for the candidates. The data is upadated each day based on the weighted average of poll responses over the previous week, which means the results have less volatility than other surveys and also could take more time to react to major events in the campaign.