Dave Leip's Atlas of U.S. Presidential ElectionsElections: Senate Margin of Victory is a data layer within the Demographics category of the PolicyMap application. To find each layer, log in to PolicyMap, select a category, and browse to the desired layer.Tabular Databb294815-82f5-45e3-a137-12b35e1d5b71engPolicyMap8888-001RestrictedElectionsElection districtsElections: Senate Margin of Victory (PolicyMap)DatasetsUnited States