You’re not imagining the impact of politics on your family gatherings, Sandi Doughton writes. Researchers from Washington State University showed—in part by using smartphone location data—that political divisions may have truncated 2016 Thanksgiving visits. Sandi’s story is in the Seattle Times, her book is Full-Rip 9.0 The Next Big Earthquake in the Pacific Northwest, and she’s on Twitter @SandiDoughton image: Ruth Caron