Writing history

Politics is writing history, politicians are like novelists. But novelists who are not free to write what they would like. They have to continue writing a text other people have written before them, where the personae, the main plot, the style are already given and not too much can be changed. In addition to these restrictions, there are the readers, the audience, the electorate who is following your every word and loudly expressing their likes, dislikes and wishes you must take into account. Which writer would like to be a writer in such conditions?!