evidence: Gun owners and non-owners are also deeply divided on several gun policy proposals, but there is agreement on some restrictions, such as preventing those with mental illnesses and those on federal watch lists from buying guns. Among gun owners, there is a diversity of views on gun policy, driven in large part by party affiliation. [...] Solid majorities of both gun owners and non-owners favor limiting access to guns for people with mental illnesses and individuals who are on the federal no-fly or watch lists (82% or higher favor among each group). In addition, strong majorities favor background checks for private sales and at gun shows (77% among gun owners and 87% among non-owners). The groups are more divided when it comes to three other policy proposals: creating a federal database to track gun sales; banning assault-style weapons; and banning high-capacity magazines. Even so, significant shares of gun owners are open to these proposals. Roughly half of gun owners (54%) say they would favor creating a federal database, and 48% favor a ban on assault weapons. Some 44% of gun owners favor banning high-capacity magazines. Support for these proposals is much higher among non-gun owners, with about three-quarters or more saying they would support each of these proposals.