Bram Stoker uses journal entries, newspaper clippings, and letters to shift the point of view between characters. By doing this the reader is able to understand the characters better and their views on Dracula and what is happening in the novel. Although it gets a tad bid confusing, it is important to the plot of the story and is what shapes the novel. As readers, we are shown who is good in the novel, and how they feel about the events that are taking place as the story unfolds. The changing of perspectives between characters allows us to side with the antagonists in some areas.
In order to make the story seem realistic, Stoker presents the novel as a series of supposedly "real" documents, written out by the people who experienced the events directly. This narrative technique puts the reader in the position of a judge or jury. We come across evidence among the variety of eyewitnesses, and we're supposed to interpret the evidence as best we can. Another effect of this technique is that we hear about the same events from multiple perspectives, we have access to multiple points of view, so there isn't just one character that we sympathize with.
In order to make the story seem realistic, Stoker presents the novel as a series of supposedly "real" documents, written out by the people who experienced the events directly. This narrative technique puts the reader in the position of a judge or jury. We come across evidence among the variety of eyewitnesses, and we're supposed to interpret the evidence as best we can. Another effect of this technique is that we hear about the same events from multiple perspectives, we have access to multiple points of view, so there isn't just one character that we sympathize with.