Using quantitative data, we construct an explanation of the adoption of policies that address the intersection of firearms and domestic violence. Removing guns from perpetrators of domestic violence, including domestic violence among unmarried couples, decreases intimate partner deaths. Beyond the very positive effects that laws on DV gun ownership by domestic violence perpetrators can have to make women safer, the sponsorship and passage of these laws over the last thirty years have increased. Using our original dataset of domestic violence firearm law (DVFL) enactments, we analyze the circumstances under which states adopt these laws. We find evidence that state and federal factors that influence policy adoption employ a set of political and demographic indicators as independent variables, particularly, the number of gun-related homicides, legislative partisan control, citizen ideology, federal legislation, and election years influence the likelihood of DVFL enactments. We also find support for the effects of vertical policy diffusion but not for horizontal policy diffusion across states. We found no effects associated with support for gun ownership or the percent of women state legislators.