Obama won the Iowa caucuses with 38% of the vote, over Edwards by 30% and Clinton by 29%. His victory brought him to national prominence as many voters tuned into the race for the first time. In a speech given that evening, he defined the word "change" as the primary theme of his campaign and said, "On this January night, at this defining moment in history, you have done what the cynics said we couldn't do." The delegate count was virtually tied, but Clinton's surprising third-place finish in the popular vote damaged her image as being the "inevitable" nominee. However, she remained upbeat, saying "This race begins tonight and ends when Democrats throughout America have their say. Our campaign was built for a marathon." and rumors of a staff shake-up began to circulate. Biden and Dodd both withdrew from the race.