That post was a total mess and made no sense whatsoever. Davidson county is Dem...big time. Always will be. It's the seat of the city, county and state government. It went for Kerry.
THAT is Metro. And we Williamson county folks WILL NOT be slandered by being called a part of Metro. And ALL of these counties "were" solidly Dem...every single county in the entire South was pre-1980 on.
Again, you are defining Metro in your own way and I refuse to acknowledge that definition. Moot point.
OK. Rant on. Davidson went for Nixon in 1960, 1968, 1972 (maybe for Ike too) and I don't think went Dem again until Carter. What happened? The metro area spilled out, and middle Tenn became more and more about the Nashville metro area, and less and less about the remaining rural counties outside that orbit.