Demographics:

Focus on the Family President Jim Daly noted in an interview last month with World Magazine that people in their 20s and 30s are especially likely to support same-sex marriage.

“We’re losing on that one, especially among the 20- and 30-somethings: 65 to 70 percent of them favor same-sex marriage,” said Daly about how evangelicals are doing in their efforts to support traditional marriage. “I don’t know if that’s going to change with a little more age – demographers would say probably not.

“We’ve probably lost that. I don’t want to be an extremist here, but I think we need to start calculating where we are in the culture.”
http://www.christianpost.com/news/natalie-portman-fiance-millepied-push-president-obama-for-gay-marriage-51008/