Prepare elections with a book

Yesterday I picked up a free copy of the book from the Belgian Prime Minister Verhofstadt about his eight years of premiership. His liberal party printed 300.000 copies of the 194 pages book that were distributed via newspaper kiosks in Flanders. In explaining this surprising move -less than three months prior to the elections- the liberals argue that the budget of € 500,000 invested in the book is more effective than using for example large billboards. Having heard that I'm curious to know how they will spend the advertising budget in the weeks prior to the elections in June. (By the way the book includes some pictures of Verhofstadt with other glasses than his much discussed Gucci designer glasses he received from his wife).