Among likely Democratic caucus-goers in this ABC News/Washington Post poll, 33 percent support Obama, 29 percent Clinton and 20 percent Edwards, with single-digit support for the other Democratic candidates, ABC News reports. That’s similar to the 30-26-22 percent division in the last ABC/Post poll in Iowa a month ago.

After her long, double-digit lead over Obama, why do you think Hillary is falling behind?