By nominating Biden, the Democrats have eliminated Trump’s ability to run an identity-based campaign, or one against socialism. The virus has shot down any chance of comparing his economic record against Obama’s. What’s left? To portray the virus as a biological weapon created by the Chinese in response to the trade war, and to argue that Biden is soft on China.
So how should Biden respond? In three ways. First, there’s plenty of footage of Trump sucking up to Xi, even with regard to the virus. Run it over and over again. Second, to point out repeatedly that Trump considers our European allies to be as bad as the Chinese on trade, and refuses to work with them to bring about real international trade reform. Finally, run against Russia. There’s plenty of footage of Trump sucking up to Putin, too, not to mention the connections between his campaign and the Russian government in 2016. The American public is suspicious of Russia for obvious historical reasons. Use that to your advantage.