Polling in Other States

SUPRC's polls have tracked elections for, President, Governor and US Senate, as well as national, statewide and local issues in many states, including: Arkansas, California, Colorado, Connecticut, Florida, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Michigan, Minnesota, Missouri, Montana, Nevada, New Jersey, North Carolina, Ohio, Oregon, Pennsylvania, Rhode Island, South Carolina, Utah, and Virginia.

Poll Documents

Suffolk Press Release

Poll of Black Voters in Pennsylvania and Michigan: Less Enthusiasm for Biden Than in 2020 [PDF]

USA TODAY Articles

Statement of Methodology

Each survey of 500 respondents was conducted between June 9 and June 13, 2024, and is based on live telephone interviews of adults 18 years of age or older, residing in the states of Pennsylvania and Michigan, who identify as being African-American. Quota and demographic information—including gender, education, and age—were determined from American Community Survey and census data. Samples of both cell phones and standard landlines were called using the most current registered voter list tagged by racial identification, such that the quotas of African American voters were proportional by county in each state. The margin of sampling error for the 500 respondents is +/-4.4 percentage points each. Error margins increase for smaller subgroups in the cross-tabulation document above. All surveys may be subject to other sources of error, including but not limited to coverage error and measurement error.

Poll Documents

USA TODAY Article

Statement of Methodology

This survey of 500 South Carolina likely Republican Primary voters was conducted between February 15 and February 18, 2024, and is based on live telephone interviews of adults who indicated they were very likely to vote in the upcoming February 24 Republican Presidential Primary. Each area’s quota and demographic information were determined from 2020 Census data and exit polling from like elections. Samples of both standard landline (9 percent) and cell phones (91 percent) were called using a probability-proportionate-to-size method, which means that the phone numbers assigned to each county were proportional to the number of likely voters expected based on past elections. South Carolina's 46 counties were grouped into four general regions. The margin of sampling error for results based on the total sample of 500 is plus or minus 4.4 percentage points. Error margins increase for smaller subgroups in the cross-tabulation document that follows. All surveys may be subject to other sources of error, including but not limited to coverage error and measurement error.

Poll Documents

Suffolk Article

Statement of Methodology

This survey of 500 likely Iowa Republican Caucus voters was conducted between January 6 and January 10, 2024, and is based on a statewide random sample drawn from a list of registered Republican and No Party voters who indicated they were very or somewhat likely to vote in their local Republican Caucuses for president on January 15, 2024. Each of Iowa's five areas and demographic information were determined from past contested Republican presidential caucuses using a probability-proportionate-to-size method, which means that the phone numbers assigned to each county were proportional to the number of likely caucus voters; the sample included 89% cell phones and 11% landlines. Iowa's 99 counties were grouped into five general regions. The margin of sampling error for results based on the total sample is plus or minus 4.4 percentage points. Error margins increase for smaller subgroups in the cross-tabulation document which follows. All surveys may be subject to other sources of error, including, but not limited to coverage error and measurement error.