This research investigates political discussion networks among American voters. Using innovative methods, the authors analyze how partisan divides shape conversations online and offline. The findings reveal striking patterns of homophily - individuals primarily discuss politics with those holding similar views despite geographic or social proximity to ideological opposites. This polarization extends beyond media consumption into intimate personal interactions. Key insights emerge from analyzing digital communication platforms alongside traditional survey data about interpersonal political talk. Results show not just that people converse within their own bubbles, but how these bubbles form and persist across different contexts.