The current issue of
PS, the professional publication of the American Political Science Association, includes a very informative series of articles on "the politics of same-sex marriage."
Only the introduction and commentary, by Gary Segura (U. of Iowa), is available online but it provides a nice summary of key findings. Sadly, the forecast is not sunny for our side. Here's a small snippet. Find the full article in PDF format at the link below.
Same sex marriage as an issue, then, represents a particularly crucial moment in American politicla history, and for gay Americans the stakes are extremely high.
First, the passage of state amendments banning same-sex marriate has had the additional effect of undoing a great deal of progress already achieved...
Second, we are likely witnessing the beginning of what may be a long period of defeat for gay and lesbian causes... http://www.apsanet.org/section_223.cfm