important for a successful marriage." One of the things was "agreement on politics." The question was also included in a Pew survey in 2007. The averages in the three years (higher numbers mean less important):
Those differences are statistically significant--that is, there's a trend towards rating agreement on politics as more important for a successful marriage (although a majority still say it's not very important). In the 2007 survey, Republicans rate it as more important (2.34) than Democrats (2.46), with Independents rating it as least important (2.51). Less educated people rated it as more important. That surprises me, since more educated people generally have stronger political opinions.