One of the challenges faced by advocates of election audits and transparency is that current voting systems each record and store election file data in unique ways. This is no surprise given that vendors have long claimed that their systems are proprietary. But the current model of storing election data in ways that prevent easy sharing and analysis is proving difficult for election officials, statisticians, election integrity advocates, and even voting systems vendors. Because of these problems, serious discussion is taking place about what can be done about standardizing election data.
Often, within a single state there are many different voting systems from multiple vendors. At the same time, many elections, including most federal and statewide races, cross election jurisdictions so that votes for the same race are reported in different ways, depending on the system type used in each district. Even a single polling place may have different types of equipment – an optical scanner and a touch screen device for accessible voting for example – which report results in incompatible ways but which must be combined after the polls close.