Actually pretty close to the real map.
Maternal side (blue)- Both are Sicilian Catholics who have lived in New Orleans there whole lives. My grandpa is tilts right overall but really tries to understand all sides of issues. He likes (and remembers well) the good ol' boy Democrats like Longs and will vote for Democrats like the Landrieus. My grandma is further to the right and is more religious.
Paternal side (red)- My grandpa died about 8 years before I was born. He was from southern West Virginia, so I'm assuming would be a Democrat. My grandma is by far the most liberal. She's a first or (second, maybe) generation Irish Catholic from Boston and still has an accent after living in New Orleans for 30+ years. She supported Hillary in 2008 but was (is) fine with Obama.