There is simply no legitimate excuse for Louisville not receiving a single vote. The Cards defeated NC State, James Madison, and Cincinnati convincingly. They won at UCF, and beat Pitt.
UofL leads the nation in sacks with 50 and have one of the best defenses in the nation, yet they can't receive one single vote from AP voters.
I do believe however the current AP poll was before the win over Cincinnati. The final poll after the bowl games are over should garner UofL a vote or two.