This is a strange correlation that probably has no validity whatsoever but it’s kind of fun anyway. Have a look at the article and chart here.
‘The younger you are, the more likely you are to support gay marriage. But what if there’s another dimension to this generational shift—the sushi gap? Raw data from a new survey of Americans’ food preferences shows that age-based unwillingness to put delicious uncooked fish in your mouth correlates nearly perfectly with existing data about who disapproves of marriage equality.’