evidence: "Statistic: 86% of Americans and 82% of gun owners support requiring all gun buyers to pass a background check, no matter where they buy the gun and no matter who they buy it from." [...] One of the survey’s questions was: "Do you support or oppose requiring a background check on all gun buyers?" 86 percent of respondents said support, 7 percent said oppose, and 8 percent said unsure, according to the Giffords report on the poll. [...] A March 2019 poll conducted by Quinnipiac University found that 87 percent of national gun owners support "requiring background checks for all gun owners." The poll surveyed 1,120 national voters and had a margin of error of plus or minus 3.4 percentage points.