Radio, along with television, is by far the most widely used medium in Germany. Federal parties also frequently use it for their advertising in the lead-up to elections. However, election advertising on the radio leads a somewhat shadowy existence in social science compared to election advertising in other media. Against this backdrop, Peter Brück clarifies the general conditions for the effects of election advertising on the radio and develops its specific mechanisms of action. He examines the intentions and strategies of the parties as well as their effects on the audience from a political science perspective, taking into account findings from communication and advertising research.