An examination of the practice of petitioning at the grassroots level shows how it stimulated a vibrant popular politics. Revisionist scholarship emphasising the supposed taming or disciplining of political culture has ignored the lively local culture of petitioning. The chapter first outlines the process and practice of petitioning: the drafting, signing, and presentation and reception of petitions. Of all these different stages in the process of petitioning, it was the practice of signing petitions that was most important to nineteenth-century popular politics. Not only did it underpin other forms of political activity, such as public meetings, but opened up new informal spaces for political activity and engendered new forms of political behaviour. The practice of petitioning stimulated a never-ending cycle of claim and counter-claim about the forging of signatures, the undue influence of landlords or employers, and outright misrepresentation. This endless contestation was intrinsic to the practice and process of petitioning and one of the most important ways in which it energised popular politics at the local level.