This Washington Post-ABC News poll was conducted by telephone June 13-15, 2018, among a random national sample of 495 adults, including landline and cell phone respondents. Overall results have a margin of sampling error of plus or minus 5.5 percentage points. Sampling, data collection and tabulation by SSRS of Glen Mills, Pa. *= less than 0.5 percent (Full methodological details appended at the end.) 1. Do you think the summit between Donald Trump and North Korean leader Kim Jong Un this week was a success for [ITEM], was not a success for [SAME ITEM], or is it too early to tell? Summary table – 6/15/18 a. The United States b. North Korea Success 21 29 Not a success 16 5 Too early to tell 55 56 No opinion 8 10 2. How likely do you think it is that the summit will lead North Korea to give up its nuclear weapons? Do you think this is very likely, somewhat likely, somewhat unlikely, or very unlikely? 6/15/18 ------- Likely -----NET Very Somewhat 41 10 31 ------ Unlikely ----NET Somewhat Very 53 27 25 No opinion 6 Compare to: How likely do you think it is that this meeting will lead to an agreement for North Korea to give up its nuclear weapons? Do you think this is very likely, somewhat likely, somewhat unlikely, or very unlikely? 4/11/18 ------- Likely -----NET Very Somewhat 30 5 25 ------ Unlikely ----NET Somewhat Very 67 25 42 No opinion 3 3. In his negotiations with Kim about North Korea’s nuclear program, do you think Trump (made reasonable compromises) or that Trump (gave away too much)? 6/15/18 Made reasonable compromises 41 Gave away too much 34 No opinion 25 4. Do you think the summit has made the long-term chance of war with North Korea (more likely), (less likely), or made no difference? 6/15/18 More likely 11 Less likely 42 No difference 39 No opinion 8 5. (IF LESS LIKELY) Is that much less likely, or somewhat less likely? 6/15/18 Much 37 Somewhat 62 No opinion 1 4/5 NET: More likely ----------- Less likely ---------NET Much Somewhat No opinion No difference No opinion 6/15/18 11 42 16 26 * 39 9 Party ID. Generally speaking, do you usually think of yourself as (a Democrat), (a Republican), an independent or what? 6/15/18 4/11/18 1/18/18 11/1/17 9/21/17 7/13/17 4/20/17 1/15/17 Democrat 31 32 31 31 31 35 31 31 Republican 27 25 23 23 23 23 24 23 Independent 41 35 40 38 36 35 36 37 Other (vol.) 1 5 4 6 6 6 6 5 No opinion * 3 2 2 3 2 4 4 *** END *** METHODOLOGICAL DETAILS This poll was sponsored and funded by The Washington Post and ABC News and is a random sample adults of the United States, including interviews in English and Spanish. This questionnaire was administered with the exact questions in the exact order as appears in this document unless otherwise noted. These questions were part of an “omnibus” survey in which other questions were asked before or after these questions. A dual frame landline and cellular phone telephone sample was generated by Marketing Systems Group (MSG) using Random Digit Dialing procedures. Interviewers called landlines cellular phone numbers, first requesting to speak with the youngest adult male or female at home. The final sample included 228 interviews completed on landlines and 267 interviews completed via cellular phones, including 156 interviews with adults in cell phone-only households. This survey uses statistical weighting procedures to account for differential chances of being selected due to landline and cellular phone access and household size. Weighting also corrects for deviations in the survey sample from known population characteristics, which helps correct for differential survey participation and random variation in samples. The overall adult sample is weighted using a raking procedure to match the demographic makeup of the population by sex, region, age, education, race/ethnicity, marital status, and population density according to Census Bureau estimates. The sample is also weighted to match phone estimates of the share of the population who are cell phone-only, landline-only and mixed user populations according to the National Health Interview Survey. All error margins have been adjusted to account for the survey’s design effect, which is 1.6 for this survey. The design effect is a factor representing the survey’s deviation from a simple random sample, and takes into account decreases in precision due to sample design and weighting procedures. Surveys that do not incorporate a design effect overstate their precision. Contact polls@washpost.com for further information about how The Washington Post conducts polls. The Washington Post is a charter member of AAPOR’s Transparency Initiative, which recognizes organizations that disclose key methodological details on the research they produce. Charter Member AAPQSR Transnarencv Initiative AMERICAN ASSOCIATION FOR PUBLIC OPINION RESEARCH