Sarah Palin’s new pay-to-view online news channel represents the next big thing in how some politicians will communicate with followers. “You have to already have intense followers, like she does, to make this work,” said Larry Sabato, of the University of Virginia’s Center for Politics. “You have to have people who are ready to go where you go.” Such subscription-based Internet channels are more likely to be used by conservatives than liberals, he said. The sites “are a natural followup to conservative dominance on talk radio,” he said.