Days after HuffPost announced a round of layoffs, one of its longtime voices is making a leap of his own accord: Sam Stein, the site’s senior politics editor, is joining the Daily Beast in a similar capacity. He joins a 10-strong D.C. bureau at the Daily Beast, a site that has made a series of big-name hires in recent weeks, including luring former Guardian reporter Spencer Ackerman and former Gawker Media president Heather Dietrick.