Question:
8a-b “On November 4th, candidates for President include Democrat Barack Obama, Republican John McCain, Independent
Ralph Nader, and Libertarian Bob Barr. If that election were held today, for whom would you vote..,.?” (Shuffle Names) If
undecided: “If you were voting today and had to decide right now, would you vote for...?” (Shuffle Names) (If already voted In
Q 5, ask: “For whom did you vote?”)

Voter Preference; Oct. 16-18, 2008
Cook County Collar Down Party ID
State Total Chicago Subs Counties state Dem. Ind. GOP Men Women
% % % % % % % % % % %
Obama 56 72 83 61 47 45 90 45 13 55 58
McCain 32 19 10 28 39 41 4 34 81 34 30
Others (Net) 3 2 1 4 2 3 2 5 1 4 2
Nader 2 1 1 1 2 3 1 4 1 3 1
Barr * 1 - 1 - * - 1 - * *
Other candidate * 1 - 1 - - 1 - - * -
Undecided 9 7 6 8 12 10 5 15 6 8 11
Base: (500) (196) (100) (96) (114) (190) (213) (136) (120) (238) (262)
[Note. * less than 1 percent.]

Poll Demographics

About this Poll
This Chicago Tribune Poll is based on interviews with 500 confirmed registered voters in Illinois likely to
vote in the November 4 general election. Interviewing began the day after the final presidential debate,
Thursday evening October 16, and ended on Saturday, October 18. The potential margin of error for a
sample of this size is +/- 4.4% at the 95% level of confidence.

Likely voting was based on certainty of voting in the upcoming election. The sample included 6% who
voted absentee or participated in Illinois’ early voting program that started October 13.