Barry Ward (Fine Gael) | Oireachtas source

I am thinking of electoral registers that are legitimately available but there might also be copies of marked registers which show whether a person has voted, and they can go back a large number of years. Consolidating them compiles a great deal of information about the voters. Is it legitimate for that information to be brought together without the knowledge of those voters and perhaps for extrapolations to be made from that, including, for example, voter intent or predictive scores about how people might vote? Is there is a legitimacy to that and, if so, is there an obligation on the data controller to inform those persons on that register? What remedies are available to them in the event there may be a shortcoming in respect of data protection obligations?