At fivethirtyeight.com (the same site that predicted which state would go for Obama or McCain in the 2008 election), they have also come up with a model and formula to predict when each state will vote against the marriage ban. Surprisingly, Utah is not the last state. Check it out here.
The Problems of Love from Sartre and Beauvoir to Irigaray
Shaun Miller's Ideas 
The back alley mud swamps of Mississippi will be last bastion of heterosexual marriage! Hold on to your values, you filthy Southerners!