http://www.pollingreport.com/civil.htm
Gay Marriage:Just about every poll people vote they are opposed to gay marriage. Weak pluralites favor some legal recognition, goes back and fourth on that note in just about all of the polls taken.
Abortion: Early term seems to go back and fourth with weak pluralities. Every major party opposes late term abortion (6 months +).
Iraq: I'll concede that support has significantly decreased so that it is about even. But you are wrong about the pre-war UN support thing. Way I remember it, and too lazy to check right now, but 60% still favored without UN support.