Data and Methodology

October 2023 Poll

October 2023 Toplines and Methodology
October 2023 Crosstabs

The Grinnell College National Poll, conducted October 10-15, 2023, for Grinnell College by Selzer & Co. of Des Moines, IA, is based on telephone interviews with 1,006 U.S. adults ages 18 or older.

Interviewers with Quantel Research contacted households with randomly selected landline and cell phone numbers. Interviews were administered in English. Responses were adjusted by sex, age, and race to reflect the general population based on recent census data.

Percentages based on the full probability sample of 1,006 respondents may have a maximum margin of error of plus or minus 3.1 percentage points. This means that if this survey were repeated using the same questions and the same methodology, 19 times out of 20, the findings would not vary from the true population value by more than plus or minus 3.1 percentage points. Results based on smaller samples of respondents—such as by gender or age—have a larger margin of error.

Republishing the Grinnell College National Poll without credit to Grinnell College is prohibited.

Documents may not meet accessibility standards for people with disabilities. If you would like an accessible document, please contact us.

March 2023 Poll

March 2023 Toplines and Methodology
March 2023 Crosstabs

The Grinnell College National Poll, conducted March 14-19, 2023, for Grinnell College by Selzer & Co. of Des Moines, IA, is based on telephone interviews with 1,004 U.S. adults ages 18 or older.

Interviewers with Quantel Research contacted households with randomly selected landline and cell phone numbers. Interviews were administered in English. Responses were adjusted by sex, age, and race to reflect the general population based on recent census data.

Percentages based on the full probability sample of 1,004 respondents may have a maximum margin of error of plus or minus 3.1 percentage points. This means that if this survey were repeated using the same questions and the same methodology, 19 times out of 20, the findings would not vary from the true population value by more than plus or minus 3.1 percentage points. Results based on smaller samples of respondents—such as by gender or age—have a larger margin of error.

Republishing the Grinnell College National Poll without credit to Grinnell College is prohibited.

Documents may not meet accessibility standards for people with disabilities. If you would like an accessible document, please contact us.

September 2022 Poll

September 2022 Toplines and Methodology
September 2022 Crosstabs

The Grinnell College National Poll, conducted September 20-25, 2022, for Grinnell College by Selzer & Co. of Des Moines, IA, is based on telephone interviews with 1,000 U.S. adults ages 18 or older.

Interviewers with Quantel Research contacted households with randomly selected landline and cell phone numbers. Interviews were administered in English. Responses were adjusted by sex, age, and race to reflect the general population based on recent census data.  

Percentages based on the full probability sample of 1,000 respondents may have a maximum margin of error of plus or minus 3.1 percentage points. Percentages based on the subset of 739 likely voters in the 2022 general election may have a maximum margin of error of plus or minus 3.6 percentage points. This means that if this survey were repeated using the same questions and the same methodology, 19 times out of 20, the findings would not vary from the true population value by more than plus or minus 3.1 or 3.6 percentage points, respectively. Results based on smaller samples of respondents—such as by gender or age—have a larger margin of error.

Republishing the Grinnell College National Poll without credit to Grinnell College is prohibited.

March 2022 Poll

March 2022 Toplines with Methodology and Crosstabs

The Grinnell College National Poll, conducted March 15-20, 2022, for Grinnell College by Selzer & Co. of Des Moines, IA, is based on telephone interviews with 1,002 U.S. adults ages 18 or older.

Interviewers with Quantel Research contacted households with randomly selected landline and cell phone numbers. Interviews were administered in English. Responses were adjusted by sex, age, and race to reflect the general population based on recent census data.   

Percentages based on the full probability sample of 1,002 respondents may have a maximum margin of error of plus or minus 3.1 percentage points. This means that if this survey were repeated using the same questions and the same methodology, 19 times out of 20, the findings would not vary from the true population value by more than plus or minus 3.1 percentage points. Results based on smaller samples of respondents—such as by gender or age—have a larger margin of error. 

Republishing the Grinnell College National Poll without credit to Grinnell College is prohibited.

October 2021 Poll

October 2021 Toplines with Methodology and Crosstabs

The Grinnell College National Poll, conducted October 13-17, 2021, for Grinnell College by Selzer & Co. of Des Moines, IA, is based on telephone interviews with 915 U.S. adults ages 18 or older.

Interviewers with Quantel Research contacted households with randomly selected landline and cell phone numbers. Interviews were administered in English. Responses were adjusted by sex, age, and race to reflect the general population based on recent census data.  

Percentages based on the full probability sample of 915 respondents may have a maximum margin of error of plus or minus 3.2 percentage points. This means that if this survey were repeated using the same questions and the same methodology, 19 times out of 20, the findings would not vary from the true population value by more than plus or minus 3.1 percentage points. Results based on smaller samples of respondents—such as by gender or age—have a larger margin of error.

Republishing the Grinnell College National Poll without credit to Grinnell College is prohibited.

March 2021 Poll

March 2021 Toplines with Methodology and Crosstabs

The Grinnell College National Poll, conducted March 24-28, 2021, for Grinnell College by Selzer & Co. of Des Moines, IA, is based on telephone interviews with 1,012 U.S. adults ages 18 or older.

Interviewers with Quantel Research contacted households with randomly selected landline and cell phone numbers. Interviews were administered in English. Responses were adjusted by sex, age, race, and educational attainment to reflect the general population based on recent census data.   

Percentages based on the full probability sample of 1,012 respondents may have a maximum margin of error of plus or minus 3.1 percentage points. This means that if this survey were repeated using the same questions and the same methodology, 19 times out of 20, the findings would not vary from the true population value by more than plus or minus 3.1 percentage points. Results based on smaller samples of respondents—such as by gender or age—have a larger margin of error.

Republishing the Grinnell College National Poll without credit to Grinnell College is prohibited.

September 2020 Poll

Sept. 2020 Toplines with Methodology and Crosstabs

The Grinnell College National Poll, conducted August 26-30, 2020, for Grinnell College by Selzer & Co. of Des Moines, IA, is based on telephone interviews with 1,012 U.S. adults ages 18 or older, including 827 likely voters in the 2020 general election.

Interviewers with Quantel Research contacted households with randomly selected landline and cell phone numbers. Interviews were administered in English. Responses were adjusted by sex, age, race, and educational attainment to reflect the general population based on recent census data.  

Percentages based on the full probability sample of 1,012 respondents may have a maximum margin of error of plus or minus 3.1 percentage points. This means that if this survey were repeated using the same questions and the same methodology, 19 times out of 20, the findings would not vary from the true population value by more than plus or minus 3.1 percentage points. Results based on smaller samples of respondents—such as by gender or age—have a larger margin of error. Results based on the 827 likely voters in the 2020 general election have a maximum margin of error of plus or minus 3.4 percentage points.

Republishing the Grinnell College National Poll without credit to Grinnell College is prohibited.

April 2020 Poll

April 2020 Toplines with Methodology and Crosstabs

The Grinnell College National Poll, conducted March 27-30, 2020, for Grinnell College by Selzer & Co. of Des Moines, IA, is based on telephone interviews with 1,009 U.S. adults ages 18 or older, including 777 likely voters in the 2020 general election.

Interviewers with Dynata contacted households with randomly selected landline and cell phone numbers. Interviews were administered in English. Responses were adjusted by sex, age, race, and educational attainment to reflect the general population based on recent census data.   

Percentages based on the full probability sample of 1,009 respondents may have a maximum margin of error of plus or minus 3.1 percentage points. This means that if this survey were repeated using the same questions and the same methodology, 19 times out of 20, the findings would not vary from the true population value by more than plus or minus 3.1 percentage points. Results based on smaller samples of respondents—such as by gender or age—have a larger margin of error. Results based on the 777 likely voters in the 2020 general election have a maximum margin of error of plus or minus 3.5 percentage points.

October 2019 Poll

October 2019 Toplines with Methodology and Crosstabs

The Grinnell College National Poll, conducted Oct. 17-23 for Grinnell College by Selzer & Co. of Des Moines, Iowa, is based on telephone interviews with 1,003 U.S. adults ages 18 or older, including 806 likely voters in the 2020 general election.

Interviewers with Quantel Research contacted households with randomly selected landline and cell phone numbers supplied by Dynata. Interviews were administered in English. Responses were adjusted by sex, age, and race to reflect the general population based on recent census data.

Percentages based on the full probability sample of 1,003 respondents may have a maximum margin of error of plus or minus 3.1 percentage points. This means that if this survey were repeated using the same questions and the same methodology, 19 times out of 20, the findings would not vary from the true population value by more than plus or minus 3.1 percentage points. Results based on smaller samples of respondents — such as by gender or age — have a larger margin of error. Results based on likely voters in the 2020 general election have a maximum margin of error of plus or minus 3.5 percentage points.

November 2018 Poll

November 2018 Toplines with Methodology and Crosstabs

The Grinnell College National Poll, conducted Nov. 24-27 for Grinnell College by Selzer & Co. of Des Moines, Iowa, is based on telephone interviews with 1,000 U.S. adults ages 18 or older, including 828 likely voters in the 2020 general election and 769 self-identified voters in the 2018 midterm election.

Interviewers with Quantel Research contacted households with randomly selected landline and cell phone numbers supplied by Survey Sampling International. Interviews were administered in English. Responses were adjusted by age, race, and educational attainment to reflect the general population based on recent census data.

Percentages based on the full probability sample of 1,000 respondents may have a maximum margin of error of plus or minus 3.1 percentage points. This means that if this survey were repeated using the same questions and the same methodology, 19 times out of 20, the findings would not vary from the true population value by more than plus or minus 3.1 percentage points. Results based on smaller samples of respondents — such as by gender or age — have a larger margin of error. Results based on likely voters in the 2020 general election have a maximum margin of error of plus or minus 3.4 percentage points, and results based on the self-identified voters in the 2018 midterm election have a maximum margin of error of plus or minus 3.5 percentage points.

August/September 2018 Poll

September 2018 Toplines with Methodology

The Grinnell College National Poll, conducted Aug. 29-Sept. 2 for Grinnell College by Selzer & Co. of Des Moines, Iowa, is based on telephone interviews with 1,002 U.S. adults ages 18 or older, including 779 likely voters in the 2018 general election.

Interviewers with Quantel Research contacted households with randomly selected landline and cell phone numbers supplied by Survey Sampling International. Interviews were administered in English. Responses were adjusted by age, sex, race, and educational attainment to reflect the general population based on recent census data.

Percentages based on the full probability sample of 1,002 respondents may have a maximum margin of error of plus or minus 3.1 percentage points. This means that if this survey were repeated using the same questions and the same methodology, 19 times out of 20, the findings would not vary from the true population value by more than plus or minus 3.1 percentage points. Results based on smaller samples of respondents — such as by gender or age — have a larger margin of error. Results based on likely voters in the 2018 general election have a maximum margin of error of plus or minus 3.5 percentage points.

 

For media inquiries, contact Grinnell College Office of Communications and Marketing.

For additional technical information about this study, contact Michelle Yeoman.

We use cookies to enable essential services and functionality on our site, enhance your user experience, provide better service through personalized content, collect data on how visitors interact with our site, and enable advertising services.

To accept the use of cookies and continue on to the site, click "I Agree." For more information about our use of cookies and how to opt out, please refer to our website privacy policy.