Big data and microtargeting steal the headlines about campaigning. But how important are they really to the way that political parties campaign? This book provides a fine-grained account of the campaign practices of three Australian political parties. It explores how prevalent data-driven campaigning is, introduces an original theoretical framework to understand these practices, and demonstrates that there is a disconnect between what Australian voters think about these issues and the way that parties campaign in the 21^st century. Drawing on 161 interviews, participant observation and original survey data, it shows that the reality of contemporary campaigning is often different to what we are led to believe.