draw for (something)
To decide something by picking an item, often a slip of paper, from others at random. I have my raffle ticket right here—when will they be drawing for a winner?
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
draw for somethingand draw lots
to choose lots for something, without looking; to draw a token for something from a set of tokens concealed in something. (The tokens are typically slips of paper, one of which is marked as the winner. See also draw straws.) Let's draw for the prize. The winner gets it. We will draw for a winner from the five finalists. The players drew lots to determine who would go first.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.