Democratic presidential nominee Joe Biden's wife Jill arrives for U.S. President Donald Trump and Democratic presidential nominee Joe Biden first 2020 presidential campaign debate held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

Democratic presidential nominee Joe Biden participates in the first 2020 presidential campaign debate with U.S. President Donald Trump, held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

U.S. President Donald Trump and Democratic presidential nominee Joe Biden participate in their first 2020 presidential campaign debate held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020. Morry Gash/Pool via REUTERS

People watch the first 2020 presidential campaign debate between U.S. President Donald Trump and Democratic presidential nominee Joe Biden at the Grog Shop venue in Cleveland Heights, Ohio, U.S., September 29, 2020.

U.S. President Donald Trump and Democratic presidential nominee Joe Biden participate in their first 2020 presidential campaign debate held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

President Donald Trump's sons Eric Trump, son Donald Trump Jr., Eric Trump's wife Lara Trump, daughter Tiffany Trump and daughter Ivanka Trump arrive for the start of U.S. President Donald Trump and Democratic presidential nominee Joe Biden first 2020 presidential campaign debate held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

U.S. President Donald Trump and Democratic presidential nominee Joe Biden participate in their first 2020 presidential campaign debate held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

U.S. President Donald Trump and Democratic presidential nominee Joe Biden participate in their first 2020 presidential campaign debate held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020. Morry Gash/Pool via REUTERS

U.S. President Donald Trump participates in the first 2020 presidential campaign debate with Democratic presidential nominee Joe Biden, held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

U.S. President Donald Trump participates in the first 2020 presidential campaign debate with Democratic presidential nominee Joe Biden (not pictured), held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020. Morry Gash/Pool via REUTERS

Democratic presidential nominee Joe Biden gestures as he participates in the first 2020 presidential campaign debate with U.S. President Donald Trump held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

U.S. President Donald Trump looks on as he participates in the first 2020 presidential campaign debate with Democratic presidential nominee Joe Biden, held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

U.S. President Donald Trump gestures as he participates in the first 2020 presidential campaign debate with Democratic presidential nominee Joe Biden held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

People watch the first presidential debate between U.S. President Donald Trump and Democratic presidential nominee and former Vice President Joe Biden at a bar with coronavirus disease (COVID-19) restrictions in place in Sydney, Australia, September 30, 2020.

Fans of U.S. President Donald Trump applaud for the president while watching a streaming of the first presidential debate between Trump and Democratic presidential nominee Joe Biden in Cleveland, Ohio, from Lititz, Pennsylvania, U.S., September 29, 2020.

President Donald Trump grips his podium as he participates in the first 2020 presidential campaign debate with Democratic presidential nominee Joe Biden held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

U.S. President Donald Trump and Democratic presidential nominee Joe Biden participate in their first 2020 presidential campaign debate held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

U.S. President Donald Trump participates in the first 2020 presidential campaign debate with Democratic presidential nominee Joe Biden, held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

Debate moderator and Fox News anchor Chris Wallace directs the first 2020 presidential campaign debate between U.S. President Donald Trump and Democratic presidential nominee Joe Biden held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020. Olivier Douliery/Pool via REUTERS

U.S. President Donald Trump gestures as he participates in the first 2020 presidential campaign debate with Democratic presidential nominee Joe Biden held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

Democratic presidential nominee Joe Biden participates in the first 2020 presidential campaign debate with U.S. President Donald Trump, held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

U.S. President Donald Trump reacts as he participates in the first 2020 presidential campaign debate with Democratic presidential nominee Joe Biden, held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

U.S. President Donald Trump and Democratic presidential nominee Joe Biden participate in their first 2020 presidential campaign debate held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

Democratic presidential nominee Joe Biden participates in the first 2020 presidential campaign debate with U.S. President Donald Trump held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

U.S. President Donald Trump participates in the first 2020 presidential campaign debate with Democratic presidential nominee Joe Biden held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

Democratic presidential nominee Joe Biden is embraced by his wife Jill as U.S. President Donald Trump stands next to First Lady Melania Trump at the end of their first 2020 presidential campaign debate held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020. Morry Gash/Pool via REUTERS

U.S. President Donald Trump and first lady Melania Trump leave the stage at the conclusion of the first 2020 presidential campaign debate with Democratic presidential nominee Joe Biden, held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

President Donald Trump thrusts his fist as he and first lady Melania Trump depart after his first 2020 campaign debate against Democratic presidential nominee Joe Biden held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

President Donald Trump argues with debate moderator Chris Wallace of Fox News Channel during the first 2020 presidential campaign debate with Democratic presidential nominee Joe Biden held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.

U.S. President Donald Trump gestures as he participates in the first 2020 presidential campaign debate with Democratic presidential nominee Joe Biden, held on the campus of the Cleveland Clinic at Case Western Reserve University in Cleveland, Ohio, U.S., September 29, 2020.