Characteristics
As is the case in many Southern states, Kentucky's 4th Congressional District has transitioned to supporting Republicans in the last decade, but Democrats still hold state and local offices in rural counties.
As of November 7, 2006, there was a total of 476,480 registered voters. Of these, 250,986 (52.67%) identified as Democrats, 184,705 (38.76%) identified as Republicans, and 40,789 (8.56%) identified as "Others."
As of February 2010, there were 491,021 registered voters: 254,878 Democrats (51.91%), 193,121 (39.33%) Republicans, and 44,014 (8.96%) "All Others." Among all the others included 36,922 unclassified Others, 6,646 Independents, 317 Libertarians, 91 Greens, 20 Constitutionalists, 12 Reforms, and 6 Socialists.
As of May 2012, after Congressional redistricting, there were 509,572 registered voters: 241,156 (47.32%) Democrats, 217,951 (42.77%) Republicans, and 50,465 (9.9%) "All Others". Among all the others included 39,777 unclassified Others, 10,047 Independents, 479 Libertarians, 116 Greens, 27 Constitutionalists, 12 Reforms, and 7 Socialists.
Until January 1, 2006, Kentucky did not track party affiliation for registered voters who were neither Democratic nor Republican. A number of counties are still not properly tracking this information. Campbell County was definitively verified to not be properly tracking "Other" affiliations as of January 2012, and has been working to correct the issue.
Read more about this topic: Kentucky's 4th Congressional District