U.S. President Donald Trump gives a thumb up during a live one-hour NBC News town hall forum with a group of Florida voters in Miami, Florida, U.S., October 15, 2020.

A supporter of Democratic U.S. presidential nominee Joe Biden shouts during a gathering outside Perez Art Museum before the arrival of U.S. President Donald Trump for a town hall in Miami, Florida, U.S., October 15, 2020.

U.S. President Donald Trump takes part in a live one-hour NBC News town hall forum with a group of Florida voters in Miami, Florida, U.S., October 15, 2020.

Supporters of Democratic U.S. presidential nominee Joe Biden gather outside Perez Art Museum before the arrival of U.S. President Donald Trump for a town hall in Miami, Florida, U.S., October 15, 2020.

U.S. President Donald Trump drinks water during a commercial break during a live one-hour NBC News town hall forum with a group of Florida voters in Miami, Florida, U.S., October 15, 2020.

U.S. Democratic presidential candidate Joe Biden approaches his seat, ahead of an ABC Town Hall event at the National Constitution Center in Philadelphia, Pennsylvania, U.S., October 15, 2020.

A supporter of U.S. President Donald Trump attends a gathering outside Perez Art Museum before his arrival for a town hall in Miami, Florida, U.S., October 15, 2020.

U.S. President Donald Trump speaks with host Savannah Guthrie during a live one-hour NBC News town hall forum with a group of Florida voters in Miami, Florida, U.S., October 15, 2020.

U.S. President Donald Trump takes part in a live one-hour NBC News town hall forum with a group of Florida voters in Miami, Florida, U.S., October 15, 2020.

U.S. President Donald Trump points after a live one-hour NBC News town hall forum with a group of Florida voters in Miami, Florida, U.S., October 15, 2020.

U.S. Democratic presidential candidate Joe Biden looks own from his seat while wearing a protective face mask, ahead of an ABC Town Hall event at the National Constitution Center in Philadelphia, Pennsylvania, U.S., October 15, 2020.

U.S. President Donald Trump speaks with staff during a commercial break during a live one-hour NBC News town hall forum with a group of Florida voters in Miami, Florida, U.S., October 15, 2020.

A demonstrator reacts at supporters of U.S. President Donald Trump while being detained by Miami Police officers during a gathering outside Perez Art Museum before his arrival for a town hall in Miami, Florida, U.S., October 15, 2020.

U.S. President Donald Trump looks on during a commercial break during a live one-hour NBC News town hall forum with a group of Florida voters in Miami, Florida, U.S., October 15, 2020.

U.S. President Donald Trump touches his nose part during a live one-hour NBC News town hall forum with a group of Florida voters in Miami, Florida, U.S., October 15, 2020.

U.S. Democratic presidential candidate Joe Biden sits on stage beside host George Stephanopoulos, ahead of an ABC Town Hall event at the National Constitution Center in Philadelphia, Pennsylvania, U.S., October 15, 2020.

U.S. Democratic presidential candidate Joe Biden sits on stage beside host George Stephanopoulos (not pictured) ahead of an ABC Town Hall event at the National Constitution Center in Philadelphia, Pennsylvania, U.S., October 15, 2020.

A demonstrator reacts at supporters of U.S. President Donald Trump while being detained by Miami Police officers during a gathering outside Perez Art Museum before his arrival for a town hall in Miami, Florida, U.S., October 15, 2020.

U.S. Democratic presidential candidate Joe Biden walks on stage beside host George Stephanopoulos, ahead of an ABC Town Hall event at the National Constitution Center in Philadelphia, Pennsylvania, U.S., October 15, 2020.

U.S. Democratic presidential candidate Joe Biden sits on stage beside host George Stephanopoulos, ahead of an ABC Town Hall event at the National Constitution Center in Philadelphia, Pennsylvania, U.S., October 15, 2020.

Supporters of U.S. President Donald Trump gather outside Perez Art Museum before his arrival for a town hall in Miami, Florida, U.S., October 15, 2020.