The Star-Tribune Minnesota Poll, conducted Sept. 30-Oct. 2, showed the Democrat and former writer-performer for "Saturday Night Live" with a 43 percent to 34 percent advantage over Coleman, a Republican, in a contest of Jewish candidates. Independence Party candidate Dean Barkley garnered 18 percent.
Coleman led Franken by four points last month in the same poll. The survey's margin of error is plus or minus 3.7 points.
Coleman campaign officials, according to the Minnesota Star-Tribune, criticized the poll's methodology by noting that a SurveyUSA poll conducted by a local TV station and released earlier in the week had Coleman up 10 points on Franken, 43 percent to 33 percent.
The Star-Tribune Minnesota poll also found that Barkley was drawing more votes from Coleman than Franken, and that Franken would be ahead by seven points in a head-to-head match.