"Most studies show that wealthy people are marginally happier than poor ones. People with pets or children are no happier than those without. People with active sex lives are — surprise! — happier than those without. No single morsel of happiness data, though, is more intriguing than this: Republicans are happier than Democrats.
A 2006 Pew Research poll found that 45 percent of Republicans describe themselves as “very happy,” compared with only 30 percent of Democrats (and 29 percent of independents). This is a sizable gap and a remarkably consistent one, too. Republicans have been happier than Democrats every year since the General Social Survey, conducted biannually by the National Opinion Research Center at the University of Chicago, began asking about happiness in 1972."
- From The Washington Post