ST. CLOUD  (AP) - A statewide poll by St. Cloud State University poll finds more people opposed to than in favor of next year's constitutional amendment to ban same-sex marriage, but by a very slim margin.

The school's 2011 statewide survey finds 47 percent of those polled did not support amending the state's constitution to define marriage as between one man and one woman. The survey finds 44 percent in support of the proposal, while 9 percent are undecided or refused to answer.

The poll was taken Oct. 16-27, and has a margin of error of plus or minus 5 percentage points.

The St. Cloud State survey also shows President Obama leading all potential Republican candidates for president in Minnesota, with former Massachusetts Gov. Mitt Romney registering the strongest numbers against the president.

(Copyright 2011 by The Associated Press.  All Rights Reserved.)