This post is part of our Battle of the Brands feature. Let us know which brand you prefer, and check out other Battle of the Brands posts.

The heads of CNN, Fox News, and MSNBC along with their corporate masters at Time Warner Inc. (NYSE: TWX), News Corp. (NYSE: NWS) and General Electric Co. (NYSE: GE) must be giggling with delight at the prospect of the Democratic presidential race continuing past the hotly contested race in Pennsylvania.

After all, controversy means more viewers, which of course means more advertising dollars. They probably wish that the Democrats would beat each other up in 30-second TV spots every year, but alas Americans elect a president every four years, which is probably a good thing for everybody. Still, the cable networks are going to ride this gravy train for as long as they can.

Like anything else in cable news, picking a winner in this battle of the brands depends on how you look at it. Fox, the home of Bill O'Reilly and Shepherd Smith, attracted 1.89 million viewers during Monday's prime time, the most of any network, according to Nielsen data cited by TVNewser. CNN attracted 1.03 million on its main network and 572,000 on its Headline News channel, while MSNBC was watched by 676,000.

Before conservatives start declaring Fox the top cable network yet again, remember that statistic does not represent the whole picture. Cable news advertisers are most interested in viewers aged 25 to 54 who are most likely to be interested in buying mutual funds and other products that they are shilling. That's where things get interesting.