Henry Stachyra Jr. waits for caucus participants at Rutherford Elementary School in Stillwater, Minn. Tuesday, Feb. 7, 2012. A voter identification scanning systems was being tested at the Stillwater site. MPR File Photo/Jeffrey Thompson

A new poll shows if the election were held today, constitutional amendments on marriage and voter ID would likely pass.

The latest KSTP/SurveyUSA poll found 50 percent of Minnesotans favor an amendment defining marriage as between one man and one woman. Forty-three percent oppose the amendment, which would ban same-sex marriage in the Constitution, and 8 percent are undecided.

The other amendment on the November ballot has broader support. The poll found 62 percent of Minnesotans support the idea of requiring photo IDs to vote on Election Day, while 31 percent oppose. Just 7 percent are undecided.

The poll's margin of error is plus or minus 4.3 percent on the marriage question, and 4.1 percent on the voter ID amendment. The poll surveyed 551 likely Minnesota voters on both land lines and cell phones Sept. 6-9.