People see and absorb a lot of election information — and misinformation — on the web. But we are not all getting the same information about politics and policymakers, and certainly not from the same sources. So understanding where people gather and communicate online can be crucial to understanding the political polarization in the United States, especially when some people are migrating to newer platforms that cater to specific political beliefs or content moderation rules. Marketplace’s Kimberly Adams spoke with Kate Klonick, a law professor at St. John’s University, who studies online communities and speech. Klonick says people decide where they “live” online these days based on the rules of the platform.