Fox News was once again the runaway cable news ratings leader on an Election Night, while CNN held up well even without carriage in DISH Network homes and opened a wider advantage over MSNBC.

FNC also won the 10 p.m. ET hour, which included national coverage on ABC, CBS and NBC.

According to Nielsen, Fox News averaged 1.662 million adults 25-54 and 6.31 million viewers overall during primetime — beating the combined totals of CNN (909,000 and 2.11 million) and MSNBC (525,000 and 1.687 million).

As the graying of the news audience (and electorate) continues, all three cable newsies were down in the demo vs. the mid-term election numbers of 2010. CNN dropped the least (roughly 10%).

Head-to-head at 10 p.m. on Tuesday, Fox News out-rated all other networks. In adults 25-54, its 1.83 million bested CBS (1.55 million), NBC (1.48 million), ABC (1.08 million), CNN (912,000) and MSNBC (566,000). And in total viewers, its 6.61 million was more than 1 million better than runner-up CBS (5.41 million).

Due to Turner Broadcasting’s contract dispute with satellite giant DISH, CNN is currently unavailable in DISH Network homes. The projected impact nationally among adults 25-54 is roughly 13% of the network’s audience, according to CNN.