(CNN) - A second national poll released Friday showed President Barack Obama and Republican presidential candidate Mitt Romney virtually tied in a hypothetical contest for the presidency.
According to the latest Reuters/Ipsos National Poll, Romney edged out Obama by a one-percentage point margin at 44% to 43% among registered voters, echoing similar results from recent major polls. The margin falls well within the survey's sampling error.
Romney made big gains against Obama since the poll was last conducted in September. At that time, Obama led Romney 49% to 43% among registered voters.
While Herman Cain now polls closely with Romney in national surveys, the former Godfather's Pizza executive didn't fare as well in a potential matchup with Obama. According to the poll, Obama holds a 46% to 41% margin over Cain, and a 47% to 41% advantage over Texas Gov. Rick Perry.
The poll was conducted after news broke of sexual harassment allegations against Cain when he led the National Restaurant Association in the late 1990s.
Romney also held a one-percentage point advantage over Obama in 12 swing states, according to results from a national Gallup survey released Friday.
In recent weeks, Obama's re-election campaign and the Democratic National Committee have focused their resources on attacking Romney, signaling Democratic fears the former Massachusetts governor will likely take the GOP nomination.
The Reuters/Ipsos National Poll surveyed 937 registered voters by telephone from Oct. 31 to Nov. 3, with a sampling error of 3.2 percentage points.