Political scientists investigate the impact that political advertisements have on political campaigns and elections. They use case studies, interviews, and analysis of specific campaigns and ads--mostly in the US but also in Canada--to explain howMorePolitical scientists investigate the impact that political advertisements have on political campaigns and elections. They use case studies, interviews, and analysis of specific campaigns and ads--mostly in the US but also in Canada--to explain how ads are constructed, why some work and some fail, and the factors about political ads that allow them