Yes, authors should have a portfolio. It is a great asset to have when applying for jobs and pitching stories to publishers. It should include a selection of your best work, samples of your writing, and a list of any awards or recognition you have received. Having a portfolio also allows potential employers to get a better idea of your writing style, topic expertise, and range of topics. A portfolio can also demonstrate your knowledge of the publishing industry and the ability to market yourself as an author.