The mission of the non-partisan Paul Simon Public Policy Institute polling is to provide citizens, policy-makers, and academic researchers with objective information about trends and issues facing society.

Sample and Geographic Coverage

The 2018 Simon Poll interviewed 1,001 registered voters across Illinois.

Polling Method

Live telephone interviews. Cell phone interviews accounted for 60 percent of the sample. A Spanish language version of the questionnaire and a Spanish-speaking interviewer were made available.

Margin of Error

Plus or minus 3.1 percentage points at the 95 percent confidence level. The margin for error will be larger for demographic, geographic and response subgroups.


Poll conducted from September 24 – 29, 2018.

Polling Agency

Customer Research International of San Marcos, Texas.

Funding Source

The survey was paid for with non-tax dollars from the Paul Simon Public Policy Institute’s endowment fund.

Copyright Notice

The “Paul Simon Public Policy Institute Poll,” the “Simon Poll” and the “Southern Illinois Poll” are the copyrighted trademarks of the Board of Trustees of Southern Illinois University. Use and publication of these polls is encouraged – but only with credit to the Paul Simon Public Policy Institute at SIUC.

Date created


Date issued


Geographic coverage



general outlook, midterm election, Donald Trump's record, federal tax reform, community health, sexual harassment, Illinois budget

Codebook.SimonPoll.2018FA.pdf (377 kB)

FA2018.SimonPoll.XTABS(Likely Voters).pdf (595 kB)
Demographic crosstabs (likely voters)

FA2018.SimonPoll.XTABS.pdf (598 kB)
Demographic crosstabs (full sample) (86 kB)
SPSS Data File (110 kB)