There are a lot of them, but If You want to know the current políticas news all TV chanela are a show called "Telediario" three times a day, they tell us the need about political, ecónomy, society, etc...
The Channels "TVE, Antena 3, Telecinco, La cuatro, La sexta" have these shows, You only must search them
Also it has a Chanel that is all day show us need about the actuality of Spain include political it is "24h_tve"
I hope all this help you, have a nice day from Spain