Has Covid-19 impacted the nomination processes and the outcome so far in the 2020 US presidential election?

The Coronavirus has not left anyone or any sector unaffected in 2020, perhaps particularly not American politics. Both the Democratic and the Republican National Conventions are now over, and the presidential race is about to enter its final stage.

Write a blog entry in which you describe some of the usual stages in American presidential elections, and compare the 2016 and the 2020 nomination processes to look for evidence of whether Covid-19 has impacted the 2020 campaigns significantly or hardly at all.

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