(CNN) - The gubernatorial race in New Jersey continues to tighten, a new survey out Thursday suggests.
A Monmouth University/Gannett poll shows Republican challenger Chris Christie's edge over Democratic incumbent Gov. Jon Corzine is down to 3 percentage points among likely voters, 43 to 40 percent - an advantage that now falls within the survey's 4 point sampling error.
Christie held an 8-point lead in a similar poll a month ago and a 14-point lead in August.
Christie, a former U.S. attorney, appears to be losing some voters to independent candidate Chris Daggett, who at 8 percent in the latest survey has doubled his support since August.
The poll surveyed 527 likely voters from September 24-29 and carries a margin of error of plus or minus 4 percentage points.