Re:The Lost History of Gay Adult Adoption
by erispoe on Wednesday October 21, 2015 @12:20PM
(#10426490)
You are right. I don't think SCOTUS looks at gallup polls and decides to endorse anything that meets a 50% threshold. It's more about recognizing a change in opinion and a consensus in the making. Interracial marriage was not at 50% but firmly on the way up.
xkcd has an interesting graph of this: https://xkcd.com/1431/