This Washington Post-ABC News poll was conducted by telephone April 7-9, 2017 among a random national sample of 900 adults, including users of both conventional and cellular phones. The results from the full survey have a margin of sampling error of plus or minus four percentage points. Sampling, data collection and tabulation by SSRS of Media, Pa. (Full methodological details appended at the end.) *= less than 0.5 percent 1. Do you support or oppose President Trump’s decision to launch a missile strike on a Syrian air base in retaliation for the Syrian government using chemical weapons against civilians? Do you feel that way strongly or somewhat? 4/9/17 ---------Support--------NET Strongly Somewhat 51 31 20 ---------Oppose---------NET Somewhat Strongly 40 13 27 No opinion 9 Compare to 9/15/13: The United States says it has determined that the Syrian government has used chemical weapons in the civil war there. Given this, do you support or oppose the United States launching missile strikes against the Syrian government? Do you feel that way strongly, or somewhat? 9/15/13 9/8/13 9/1/13 -------- Support -------NET Strongly Somewhat 30 17 13 30 14 16 36 18 18 --------- Oppose -------NET Somewhat Strongly 61 15 45 64 21 44 59 21 39 No opinion 10 6 5 2. Would you support or oppose additional U.S. air strikes against the Syrian government at this time? 4/9/17 Support 35 Oppose 54 No opinion 11 3. How confident are you that the U.S. missile strike will end the Syrian government’s use of chemical weapons – are you very confident of this, somewhat confident, not so confident, or not confident at all? 4/9/17 ------Confident-----NET Very Somewhat 25 6 20 -----Less confident----NET Not so Not at all 69 28 41 No opinion 6 4. Are you concerned or not concerned about the missile strike worsening U.S.-Russian relations? 4/9/17 Concerned 59 Not concerned 35 No opinion 6 5. Does the missile strike make you more confident in Trump’s leadership, less confident, or does it make no difference? 4/9/17 More confident 25 Less confident 28 Makes no difference 43 No opinion 4 6. Would you support or oppose a U.S. policy of trying to remove the Syrian President, Bashar al-Assad, from power? 4/9/17 Support 51 Oppose 30 No opinion 19 7. (IF SUPPORT REMOVING ASSAD) If diplomatic efforts are unsuccessful, would you support or oppose additional U.S. military action to remove Assad from power? 4/9/17 Support 68 Oppose 22 No opinion 10 Q6/Q7 NET TABLE: 4/9/17 -----Support policy of removing Assad----Support mil. Oppose mil. No NET action action opinion 51 35 12 5 Oppose removing Assad 30 No opinion 19 PARTY ID. Generally speaking, do you usually think of yourself as a: 4/9/17 Republican 23 Democrat 32 Independent 40 Other 1 No opinion 5 *** 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 question. 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 391 interviews completed on landlines and 509 interviews completed via cellular phones, including 321 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 1.5 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.