Here are the two questions they asked:

Do you think same-sex marriage should be legal or illegal?
Legal............................................................... 46%
Illegal .............................................................. 45%
Not sure .......................................................... 9%

Should the Minnesota Constitution be amended to provide that only a union of one man and one woman shall be valid or recognized as a marriage in Minnesota?
Yes.................................................................. 46%
No ................................................................... 47%
Not sure .......................................................... 7%

The most recent SurveyUSA poll showed Minnesotans supporting the marriage amendment 51-40%, so there is obviously some give in these findings.