Journalist Susan Delacourt believes Canadians' relationship with their politicians changed with the consumer boom of the 1950s.

With that explosion in consumerism, advertising became the leading source of information — even in politics.

But as she argues in her new book, Shopping for Votes, consumers have wants, while citizens have needs — and that creates a clash between short-term and long-term policies in the bid for votes.

Delacourt spoke with host Evan Solomon on CBC News Network's Power & Politics about her book and the evolution and impact of political marketing in Canada. Watch the full interview above.