Falling Covid-19 cases create opportunity and peril for Trump

Coronavirus infections are down in nearly every state. That could either give President Donald Trump just what he needs to prime his reelection odds or become another missed opportunity to capitalize on a lull during the pandemic.

The positive trends are real. Covid-19 cases have been falling since late July, including in several battleground states. Hospitalizations have dropped 37 percent in the last month and the daily death count is leveling off.

But that doesn’t mean the pandemic is over, even if Trump and his team portray it that way....