A constitutional amendment to ban gay marriage in Iowa would start out with the lead, 50-43.
41% of Iowans think gay marriage should be legal to 48% who believe it should be illegal, a spread that matches the one for the constitutional amendment.
The balance of power in the Iowa Senate currently hinges on the outcome of the special election in Senate District 18. The Democrat, Liz Mathis, opposes allowing Iowans to vote on marriage. The Republican, Cindy Golding, supports the right of Iowans to vote on marriage.