President Trump held a rally in Winston-Salem, N.C., where he accused his opponents of being “anti-vaccine” and said a coronavirus vaccine could be coming “very soon.” Earlier, the campaign of Joe Biden and running mate Kamala D. Harris emphasized that they are pro-vaccine and called on the FDA to lay out criteria for ensuring a safe and effective vaccine.

Earlier, in Florida, Trump signed an order extending a moratorium on oil drilling off the coasts of Florida, Georgia and South Carolina, a stark reversal as he seeks to shore up votes in battleground states.

Biden, who had no public appearances Tuesday, unveiled an ad that seeks to frame the race as a choice between the “darkness” of Trump’s tenure and the prospect of a “fresh start.”

Here are some significant developments: