The poll included both announced as well as potential candidates.

The poll included 11,645 voters in 293 randomly selected precincts.

It would be great if every poll included a section that asked respondents to answer a few factual questions.

The poll included 1,223 adult city residents, of whom 804 said they were registered to vote.

The poll did not include a survey of Republicans in Illinois.

The poll included 1,642 voters in 40 randomly selected precincts.

The poll included 1,118 voters in 29 randomly selected precincts.

The poll included 463 adults who said they had a college education and a family income of $50,000 or more in 1990.

The poll included 11,583 voters in 296 randomly selected precincts.

Such a poll, survey experts say, may include disproportionate numbers of retired people and fewer young men, who are less often home than other groups.