The internet puts human knowledge and current events, in a searchable and easily archivable format. That is much different than old paper, spoon fed news. Before the internet, and tivo, you either watched a debate when it aired, or ate with your family, or went out somewhere. Everything was word of mouth, if it didn't come from the tube or newspaper.
Everything was top down in structure, from a few sources to many. Now it's more like a bottom up structure, where we all share information, and prop up the few candidates or important stories to the top. No more of this declaring front runners 14 months before elections. No more changing stories as they happen. If someone catches it on video (like their cell phone), it's available. It can make or break anyone.
Within a generation, everything will be different. The rules are changing, this is just the beginning as the web and humanity mature.