The Covid-19 pandemic is a major test for governments around the world. We study the political consequences of (mis-)managing the Covid crisis by constructing a highfrequency dataset of government approval for 35 countries. In the first weeks after the outbreak, approval rates for incumbents...

We present a model of participation in large elections in which the formation of voter groups is endogenous. Partisan citizens decide whether to become leaders (activists) and try to persuade impressionable citizens to vote for the leaders' preferred party. In the (unique) pure strategy...