Nearly four of 10 likely voters in the Sixth Congressional District say they are less likely to support Rep. Michele Bachmann because of her comments about Barack Obama and Congress.

That was a finding from a Minnesota Public Radio poll that showed the race between Bachmann, a Republican, and Democratic challenger Elwyn Tinklenberg to be a virtual dead heat.

In the new MPR poll, only 8 percent of voters said they were more likely to support Bachmann as a result of her remark that Obama "may have anti-American views" and her call for the news media to investigate the views of members of Congress.

Overall, the poll found that voters favored Tinklenberg over Bachmann 45 percent to 43 percent, with 5 percent supporting Independence Party candidate Bob Anderson. The poll has a margin of error of plus or minus 4.7 percentage points.

The results of the MPR survey are similar to those from a poll conducted by SurveyUSA, which also showed Tinklenberg leading within the margin of error.