[1] Redistricting legislation was passed by both houses of the Kentucky General Assembly and signed into law by Governor Steve Beshear on February 10, 2012.

[4] In redistricting, the 1st district was made slightly more competitive, but continues to strongly favor Republicans.

[7] In redistricting, the 2nd district was made slightly more favourable to Republicans.

[5] Ben Chandler Democratic Andy Barr Republican Democrat Ben Chandler, who had represented the 6th district since 2004, ran for re-election.

[7] In redistricting, the 6th district was modified with the effect that, had the 2008 presidential election been held under the new boundaries, Democratic nominee Barack Obama would have received a share of the vote 1.5 percentage points greater than that which he achieved under the former boundaries.