Veteran campaigners are experienced political activists who have been involved in campaigns for a long period of time. They are often knowledgeable about the issues and have a deep understanding of the political process. POLS, which is an acronym for 'Political Science, ' is a field of study that focuses on the analysis of political systems, behavior, and processes. Veteran campaigners are well-versed in the principles of Political Science and use their knowledge to help shape the outcomes of political campaigns.