I think the only way the virus will affect the election is it will continue to decimate the economy. When tRump supporters start to go hungry and lose their homes they might start to think twice about their choice. The Democrats took over after the 2008 crises because of how the Republicans contributed to the economic crash.

I doubt very much if the epidemic will have much effect on the election. In the overwhelming majority of cases the symptoms are mild or non-existent and recovery is fast and certain. Only a few hundredths of one percent of the population are dying from the virus, and most of those are near the end of their lives anyway.

Nevertheless, if it is absolutely necessary to turn the epidemic into a political hate-fest, we should look at those deaths. One can not recover from a death—those who died will hopefully not be voting. Here’s a map that shows which states have suffered the most deaths per capita, and it looks to me like most of those are Democrat states. It appears that the Republican areas across the country have generally been only lightly affected, and I doubt if that is going to change much despite the hopes of some.

[theguardian.com]

What concerns me is the possibility that COVID-19 will spread among the demonstrators in cities now. There are large number of minorities who could fall ill, or be imprisoned. That would not bode well for an election. The demonstrations could be super spreader events. At least many of them are wearing masks.