Are the lists of all registered voters, or actual voters?
Aristotle compiles these lists of registered voters from Secretaries of State, county boards of election and the like. In some cases they even include voters marked as inactive (in the status field). In VLO 2.0 Query Builder you can exclude Inactive Voters by selecting Vote History -> Voter Status -> Exclude All Inactive Voters. In Classic VLO you can exclude these voters on the vote history Step 5. The vote history fields indicate whether each voter actually participated in a given election, but not for whom the voter voted, of course. Keep in mind that the vote history data vary greatly and in some regions are not available at all.