NBC News/Marist Poll Ohio Annotated Questionnaire March 2020 OH Adults: n=2,020; MoE +/- 2.6 OH Registered Voters: n=1,710; MoE +/- 2.9 OH Potential Democratic Electorate: n=830; MoE +/- 4.1 OH Likely Democratic Primary Voters n=486; MoE +/- 5.6 Do you approve or disapprove of the job Donald Trump is doing as president? Do you approve or disapprove of the job Donald Trump is doing as president? [And, would you say you strongly approve/disapprove of the job he is doing or just approve/disapprove?] Knowing it is a long ways off, what is your preference for the outcome of this year´s congressional elections: OH Adults OH Registered Voters OH Potential Democratic Electorate OH Likely Democratic Primary Voters Column % Column % Column % Column % Approve 46% 46% 10% 8% Disapprove 47% 48% 86% 89% Vol: Unsure 7% 6% 4% 3% Strongly approve 33% 34% 4% 3% Approve 13% 12% 6% 5% Disapprove 10% 9% 14% 11% Strongly disapprove 37% 39% 72% 78% Unsure 7% 6% 4% 3% A Congress controlled by Democrats 86% 90% 43% 45% A Congress controlled by Republicans 43% 44% 6% 5% Vol: Unsure 14% 11% 8% 5% If the Democratic presidential primary in Ohio were held today, whom would you support if the candidates are: [If undecided: If you had to decide today, are you leaning more towards:] [If already voted: Whom did you support in the Democratic presidential primary in Ohio?] [Asked of Potential Democratic Electorate] Joe Biden n/a n/a 56% 58% Bernie Sanders n/a n/a 36% 35% Tulsi Gabbard n/a n/a 2% 2% Other n/a n/a 2% 2% Undecided n/a n/a 4% 4% n/a n/a 16% 14% Ohio Democratic Primary Persuadable Voters NBC News/Marist Poll OH Annotated Questionnaire 1 Would you say that you strongly support somewhat support , or do you think that you might vote differently on Primary Day? [Asked of Potential Democratic Electorate with a Candidate Preference] Strongly support Somewhat support If November's election for president were held today, whom would you support if the candidates are: [Asked of Registered Voters] If November's election for president were held today, whom would you support if the candidates are: [Asked of Registered Voters] OH Adults OH Registered Voters OH Potential Democratic Electorate OH Likely Democratic Primary Voters Column % Column % Column % Column % n/a n/a 62% 68% n/a 27% 24% 8% n/a Might vote differently n/a n/a 10% Unsure n/a n/a 1% 1% Joe Biden, the Democrat Donald Trump, the Republican n/a 49% 89% 92% n/a 45% 7% 5% Vol: Other n/a 1% 1% 1% Vol: Undecided n/a 5% 3% 2% n/a 48% 86% 88% n/a 46% 7% 6% n/a 1% 2% 3% Bernie Sanders, the Democrat Donald Trump, the Republican Vol: Other 5% 4% 4% Vol: Undecided n/a Nature of the Sample: NBC News/Marist Poll of 2,020 Ohio Adults This survey of 2,020 adults was conducted March 10th through March 13th, 2020 by The Marist Poll sponsored in partnership with NBC News. Adults 18 years of age and older residing in the state were contacted on landline or mobile numbers and interviewed by telephone using live interviewers. Survey questions were available in English or Spanish. Mobile telephone numbers were randomly selected based upon a list of telephone exchanges from throughout the state from Dynata. The exchanges were selected to ensure that each region was represented in proportion to its population. Mobile phones are treated as individual devices. After validation of age, personal ownership, and non-business-use of the mobile phone, interviews are typically conducted with the person answering the phone. To increase coverage, this mobile sample was supplemented by respondents reached through random dialing of landline phone numbers. Within each landline household, a single respondent is selected through a random selection process to increase the representativeness of traditionally under-covered survey populations. Assistance was provided by Luce Research for data collection. The samples were then combined and balanced to reflect the 2017 American Community Survey 5-year estimates for age, gender, income, race, and region. Results are statistically significant within ±2.6 percentage points. There are 1,710 registered voters. The results for this subset are statistically significant within ±2.9 percentage points. There are 830 voters in the potential Democratic primary electorate. The potential Democratic primary electorate in Ohio includes all voters who prefer to vote in the Democratic presidential primary and those who identify as Democrats or Democratic leaning independents without a primary preference. The results for this subset are statistically significant within ±4.1 percentage points. There are 486 likely Democratic primary voters defined by a probability turnout model, which determines the likelihood respondents will participate in the 2020 Ohio Presidential Primaries based upon their chance of vote, interest in the primary election, and past primary participation. The results for this subset are statistically significant within ±5.6 percentage points. Tables include results for subgroups with a minimum sample size of 100 unweighted completed interviews as to only display crosstabs with an acceptable sampling error. It should be noted that although you may not see results listed for a certain group, it does not mean interviews were not completed with those individuals. It simply means the sample size is too small to report. The error margin was adjusted for sample weights and increases for cross-tabulations. NBC News/Marist Poll OH Annotated Questionnaire 2