A poll from CNN this week is the latest to show a majority of Americans in favor of same-sex marriage, with 51 percent saying that marriages between gay and lesbian couples “should be recognized by the law as valid” and 47 percent opposed. This is the fourth credible poll in the past eight months to show an outright majority of Americans in favor of gay marriage.... As we noted last August, support for gay marriage seems to have been increasing at an accelerated pace over the past couple of years. Below is an update to the graph from last year’s...