Shared Space and Civic Engagement: Block Parties and Voter Turnout in Philadelphia

Along with socioeconomic resources, “strong ties” of family and friends increase political engagement. However, most daily interactions are casual encounters with “weak” social ties. How do these interactions shape political participation in urban environments? Interpersonal contact with weak ties may enable information sharing and increase voting participation. Using an original individual-level dataset that merges geocoded Census data, voter file data, and city permits for neighborhood “block parties” in Philadelphia, this study explores the ways one-off events that draw neighbors together influence turnout. The results show neighborhood block parties are positively associated with individual-level voting. These mobilizing effects are particularly visible in African American neighborhoods. Taking advantage of the fact that some blocks request permits some years and not others, the data allow for time-variant tests, linking changes in the strength of neighborhood-based “weak ties” with increased turnout. This research suggests that casual interactions among neighborhood weak ties shape political engagement.