https://www.sciencedaily.com/releases/2020/09/200925113625.htm

In the days and weeks with high numbers of new COVID-19 cases there were also large boosts to leader approval. These results support a "rally 'round the flag" phenomenon in which citizens rally around their leaders during times of crisis and may have voting implications.

Data analyzed by the University of North Carolina at Chapel Hill and the National University of Singapore reveal world leaders, on average, experienced a 14-point boost in approval.