Al Mohler has some interesting stats from USA Today on marital status determining your politics.
"Republicans control 49 of the 50 districts with the highest rates of married people.
Democrats represent all 50 districts that have the highest rates of adults who have never married.
The political tug-of-war is between people who are married and those who have never been."
See here for more. He also notes correctly that the value of tuning in to politics is that it reveals cultural values.
Good Chesterton quote on the family in there, too.