Question:
The survey found Obama, a first-term Illinois senator from Chicago, with the support of 55 percent of likely Democratic primary voters. Clinton, a two-term New York senator born in Chicago and raised in suburban Park Ridge, had 24 percent.

Poll Demographics

About this Poll
The survey, involving separate samples of 500 Republicans and Democrats who said they were likely to take part in the state's accelerated primary on Tuesday, has an error margin of 4.4 percentage points. The Democratic poll began Tuesday and the Republican poll began Wednesday; both polls concluded Thursday.