You-Gov Final Iowa Poll: Obama leads by 1

Democratic President Barack Obama holds a nominal, 1-point lead over Republican challenger Mitt Romney in Iowa, 48% Obama to 47% Romney, in a YouGov poll of 1,040 likely voters statewide.

In Iowa (Oct 31-Nov 3):
Romney leads among likely voters who are Independents, 50% for Romney and 43% for Obama.
Obama enjoys a large 56%-41% advantage in the Eastern cities, 55%-40% in central Iowa, and a marginal lead of 49%-46% in east central Iowa. Romney leads by a 2-to-1 margin in western Iowa, 63%-32%.

http://today.yougov.com/news/2012/11/04/iowa/