Does living in a Blue State reduce the odds of divorce?

According to WSJ's Sue Shellenbarger, the answer is "yes and no". Yes, many of the states with higher reported divorce did in fact vote Republican in the last Presidential election, but no there is no known causal relationship between political affiliation and odds of divorce. Once again we have the confusion of "correlation versus causation":

The apparent Red-Blue distinction is more likely a function of well-documented nonpolitical factors. Having a college degree, for example, has been linked repeatedly in studies to a lower divorce rate, as has active participation in certain religious denominations. "The kind of people who live in Massachusetts -- well-educated, Catholic -- are the kind of people who tend to divorce less," Dr. Cherlin says. Also, marriage rates tend to be lower in Blue states, suggesting that couples who might eventually have divorced if they had gotten married are cohabitating instead.

If you are interested in what makes a lasting relationship, then read Laurie Israel's article "25 Secrets to a Great Marriage"

Source: WSJ [link might require fee or registration]