Investing.com -- Democratic presidential candidate Kamala Harris has slightly extended her lead over Republican rival Donald Trump in support among registered voters, holding a 47% to 40% advantage, according to a new Reuters/Ipsos poll.
The three-day survey found that Harris was backed by 46.61% of registered voters, while Trump was supported by 40.48%, Reuters said. The poll had a margin of error of four percentage points.
In a prior poll conducted on Sept. 11-12, shortly after a fiery debate between the two candidates, Harris had a five-point advantage over Trump.
Harris has also chipped away at Trump's lead on key questions around "the economy, unemployment and jobs," Reuters said.
Some 43% of voters said Trump would take a better approach to the economy and jobs, while 41% chose Harris. Trump had held a three-point advantage in an early August Reuters/Ipsos poll and an 11-point lead after Harris launched her campaign in late July, Reuters reported.
However, when asked in an August poll solely about either candidates' ability to steer "the US economy," Trump retained a clear 45% to 36% lead, Reuters noted.
On Tuesday, Trump pledged to institute new manufacturing zones on federal land and take a tough stance with US trading partners.
Harris, meanwhile, has promised to roll out tax breaks for families with children and hike corporate tax rates. She is expected to speak more about her economic plans this week, although some advisers believe that she may be running out of time to persuade voters, Reuters reported.
Heading into the final weeks of campaigning before the November vote, polls suggest that the race is still tight, particularly in the crucial battleground states that could heavily influence the outcome of the ballot.
On Tuesday, a CNN poll conducted by SSRS showed that Harris was backed by 48% of likely voters, with Trump close behind at 47%.
(Reuters contributed to this report.)