Arthur C. Brooks has been guest blogging on the Freakonomics blog about his new book, Gross National Happiness. The main point of the series is that conservatives are happier than liberals. Thus far, he has broken this down by religion. Religious people are more likely to be conservative, and religious people are much more likely to be happy. Half of religious conservatives are very happy, vs. less than a quarter of secular liberals. The other two cells of the table fall in between.
He has hinted that marriage is another big factor in conservatives' greater happiness. More on that hereafter.