The coronavirus outbreak is reshaping the presidential race in three key Sun Belt states. Joe Biden is now leading President Trump by six points in Florida, and the two are tied in Arizona and competitive in Texas, where Biden is down by just a point to Mr. Trump. Biden has made gains in part because most say their state’s efforts to contain the virus are going badly — and the more concerned voters are about risks from the outbreak, the more likely they are to support Biden.

In all three states, most voters say their state reopened too soon, and those who say this feel their state went too fast under pressure from the Trump administration. Most also say the president is doing a bad job handling the outbreak. He may be paying a price for that, at least in the short term.