The contributors to this Handbook examine the differences as well as the similarities of political advertising among the electoral processes of democracies globally. For each country or region, chapter authors provide an overview of research on political advertising and address political advertising history, political and regulatory systems related to political advertising, the effects of media system structures and the effects of new technologies on political advertising. The editors provide overview and comparative chapters and address the effects of political advertising on the voters and the systems of which it is a part.