"Blue" in Blue in the Bluegrass refers to my politics, not my state of mind, although being progressive-democratic in Kentucky is not for the faint of heart.
The Bluegrass Region of Kentucky is Central Kentucky, the area around Lexington. It's also sometimes known as the Golden Triangle, the region formed by Louisville in the west, Cincinnati in the north and Lexington in the east-south corner. This is the most economically advanced, politically progressive and aesthically beautiful area of the state. Also the most overpopulated by annoying yuppies and the most endangered by urban sprawl.
A Yellow Dog Democrat is one who will vote for even a yellow dog if it is running as a Democrat. I can't claim to be quite that fanatically partisan, especially since quite a few candidates who run as Democrats in Kentucky are more Republican than a lot of Republicans I can name.
But I do love the story Kentucky House leader Rocky Adkins never tires of telling about the old-timer in Eastern Kentucky who was once accused of being willing to vote for Satan if Satan ran as a Democrat. Spat back the old-timer:
"Not in a primary, I wouldn't!"