'THE ROB PORTMAN EFFECT': New Poll Reveals Why There's Been Such A Historic Shift On Gay Marriage Support

The record levels of support for gay marriage have been ignited by more Americans than ever saying they know a family member or close friend who is gay, according to a new CNN/ORC poll released Monday. CNN Polling Director Keating Holland dubbed it the "Rob Portman effect" — Portman shifted his stance on same-sex marriage a little more than a week ago because his son came out to him.  The numbers line up with Holland's theory. In a 2007 CNN poll, only 40 percent of respondents said the...