We received a tip over the weekend asking if Nancy Grace's strong December was going to propel her to a victory in the A25-54 demo over the usual winner, The O'Reilly Factor.

After running the numbers, our unofficial tally puts Grace's 8pmET average at 590,000 and Bill O'Reilly's at 609,000 (through December 23). Countdown with Keith Olbermann is expected to come in third and Campbell Brown: No Bias, No Bull will come in fourth in the time slot.

This follows record ratings for Grace's program following the discovery of Caylee Anthony's remains. From the day that news broke, Grace's program finished first in the demo every night.

We'll have more on the December and full year ratings tomorrow.