Supporters of U.S. President Donald Trump attend a campaign rally at Ocala International Airport in Ocala, Florida, U.S., October 16, 2020.

Supporters of U.S. President Donald Trump gather at his campaign event in Macon, Georgia, U.S., October 16, 2020.

U.S. President Donald Trump greets supporters as he arrives at John Wayne Airport in Santa Ana, California, U.S., October 18, 2020.

Supporters cheer as U.S. President Donald Trump holds a campaign rally at Middle Georgia Regional Airport in Macon, Georgia, U.S., October 16, 2020.

U.S. President Donald Trump leaves after his campaign rally at Middle Georgia Regional Airport in Macon, Georgia, U.S., October 16, 2020.

Supporters of U.S. President Donald Trump laugh after filming a dance for TikTok at his campaign event in Macon, Georgia, U.S., October 16, 2020.

U.S. President Donald Trump points his finger during a campaign rally in Carson City, Nevada, U.S., October 18, 2020.

U.S. President Donald Trump attends a service at the International Church of Las Vegas in Las Vegas, Nevada, U.S., October 18, 2020.

Georgia Representative Doug Collins speaks with supporters at a campaign event for U.S. President Donald Trump in Macon, Georgia, U.S., October 16, 2020.

Supporters of U.S. President Donald Trump attend a campaign rally at Ocala International Airport in Ocala, Florida, U.S., October 16, 2020.

Supporters of U.S. President Donald Trump gather outside his campaign event in Macon, Georgia, U.S., October 16, 2020.

Supporters of U.S. President Donald Trump yell as he walks on stage at his campaign event in Macon, Georgia, U.S., October 16, 2020.

White House adviser Hope Hicks waves near of U.S. President Donald Trump during a campaign rally at Ocala International Airport in Ocala, Florida, U.S., October 16, 2020.

Flags wave in the wind as supporters of U.S. President Donald Trump gather near his campaign event in Macon, Georgia, U.S., October 16, 2020.

U.S. President Donald Trump is seen reflected in the glasses of a supporter as he speaks during a campaign rally in Carson City, Nevada, U.S., October 18, 2020.

Attendees wearing face masks listen as U.S. President Donald Trump holds a campaign rally at Southern Wisconsin Regional Airport in Janesville, Wisconsin U.S., October 17, 2020.

U.S. President Donald Trump speaks during a campaign rally at Muskegon County Airport in Muskegon, Michigan U.S., October 17, 2020.

U.S. President Donald Trump reacts at the end of his campaign rally at Ocala International Airport in Ocala, Florida, U.S., October 16, 2020.

A supporter of U.S. President Donald Trump, Cat Fletcher, talks on the phone at Trump's campaign event in Macon, Georgia, U.S., October 16, 2020.

Supporters of U.S. President Donald Trump watch him speak on a screen at his campaign event in Macon, Georgia, U.S., October 16, 2020.

A supporter of U.S. President Donald Trump adjusts her facial shield during a campaign rally at Caloosa Sound Convention Center & Amphitheater in Fort Myers, Florida, U.S., October 16, 2020.

Supporters of U.S. President Donald Trump pose for photos in front of a bus with his image on it as they gather outside his campaign event in Macon, Georgia, U.S., October 16, 2020.

Supporters of U.S. President Donald Trump watch him speak on a screen at his campaign event in Macon, Georgia, U.S., October 16, 2020.

U.S. President Donald Trump holds a campaign rally at Southern Wisconsin Regional Airport in Janesville, Wisconsin U.S., October 17, 2020.

U.S. President Donald Trump attends a service at the International Church of Las Vegas in Las Vegas, Nevada, U.S., October 18, 2020. REUTERS/Carlos Barria

U.S. President Donald Trump raises his fist during a campaign rally in Carson City, Nevada, U.S., October 18, 2020.

U.S. President Donald Trump donates money as he attends a service at the International Church of Las Vegas in Las Vegas, Nevada, U.S., October 18, 2020.