There's a good fraction of those networks that I've never heard of before, which I'm sure exactly nobody finds surprising. Just looking at the ones I knew (or could figure out from the name), it looks like the ad buy strategies of the two parties could boil down to this:
Democrats: buy ads on networks whose audience is dominated by women and young people
Republicans: buy ads on networks whose audience is dominated by men, older folks, and possibly business people
There's another way you could look at this, too:
Democrats: buy ads on networks with content that is mindless and entertainment-based
Republicans: buy ads on networks with content that engages the brain at least a little bit, or involves golf (a sport that I find very puzzling, as in I can't figure out why anyone would do it)
And there's yet a third way to look at it: the fact that either party is seeking voters on any of these venues smells an awful lot like ... doom...