Former President Donald Trump now leads Vice President Kamala Harris by 3 points among independents, marking a dramatic shift from one month ago, according to new polling.

In the latest NPR/PBS News/ Marist poll, which came out hours before Tuesday’s debate in Pennsylvania, 49 percent of independent respondents said they are supporting or leaning toward Trump, while 46 percent said the same for Harris.

Three percent said they’re backing a third-party candidate, and 2 percent said they’re undecided. In an early August poll, Harris held an 11-point lead over Trump with independents — with 48 percent support versus his 37 percent.

In that poll, independent presidential candidate Robert F. Kennedy Jr. was backed by 12 percent of independents and other third party candidates received 2 percent support.

Kennedy has since suspended his campaign, endorsed Trump and urged his supporters to back him. Political experts previously told McClatchy News that his endorsement “could potentially boost support for Trump.”

In August, Harris likely also benefited from a honeymoon period with voters, having only been in the presidential race since mid-July, experts previously said.

The latest poll, conducted between Sept. 3 and 5, sampled 1,529 U.S. adults and has a margin of error of 3.2 percentage points, meaning Trump’s lead is within this margin.

Other findings in the poll: Trump has similarly seen a significant increase in his support among Latino voters since August, erasing Harris’ lead, according to the poll. In the latest poll, 51 percent of Latino voters said they support the former president, while 47 percent said the same for Harris.

In August, Harris held a 15-point edge over Trump with Latino voters.

The latest poll also found there is a large gender gap in the support for the two candidates, with Harris leading among women by 15 points and Trump ahead among men by 12 points. Trump is also leading with white voters, with 50 percent versus Harris’ 47 percent.

However, Harris is receiving a larger share of support from this demographic than her Democratic predecessors. Biden garnered 41 percent support among white voters in 2020, and Hillary Clinton received 37 percent in 2016.

Among all registered voters, Harris is leading Trump by one point — 49 percent to his 48 percent — narrowing the race from August, when the vice president was up 48 percent to Trump’s 45 percent.

And among those who said they definitely plan on voting, Harris outpaced Trump by three points, 51 percent compared with his 48 percent.