Fig. 1

Volume and features of social media conversations in states with Republican (red) and Democratic governors (blue), with mask mandates modelled as a shock in an interrupted time series setup. Top: Average daily volume of tweets over time. Loess trends (dashed) are presented alongside the predictions of negative binomial regressions with 95% confidence intervals. Bottom: Average bot probabillity, proportion of low-credibility information links, and logged ratio of anti-mask to pro-mask stance over time. Linear predictions are presented with 95% confidence intervals