Who had the highest weekly average in the Adults 25-54 demographic in all three prime time slots last week? FOX. They truly dominate the week during the 8PM and 9PM hours having the highest average for all five days.
One interesting note, that on Monday, CNN's Campbell Brown Election Center had an unusually high percentage of viewers in the Adult 25 - 54 demographic: 47%. FOX demo to total viewers ratio was only 18%, while MSNBC pulled 31%. Monday night's program opened with a piece from Randi Kaye about the US hostages that were released from Columbia.
Sometimes the math is just cruel when taking a look at each days ratings compared to the weekly average. During the 10pm hour, FOX had the highest overall weekly rating, but again only had the highest demo rating on two out of the five nights. CNN's Anderson Cooper 360 won on Monday, Wednesday, and Friday nights. (Note: Anderson Cooper anchored a live broadcast on Monday & Tuesday night. Friday's broadcast was pre-recorded. Wednesday & Thursday nights were anchored by Campbell Brown.)
^ Courtesy Nielsen Media Research; Demographics where noted; Live + Same Day (LS) Fast Track Nationals.