WASHINGTON — A show devoted to snack food is expected to draw suppliers from 22 countries when it kicks off in May, the show's sponsoring organization said.

The 2013 Sweets & Snacks Expo, which will take place May 21-23 at Chicago's McCormick Place, is expected to be the most successful in the event's 16-year history, with a nearly sold-out show floor, according to the National Confectioners Association.