Fighting in swing states, Trump also forced to play defense President Donald Trump speaks at a campaign rally at Des Moines International Airport, Wednesday, Oct. 14, 2020, in Des Moines, Iowa. (AP Photo/Alex Brandon)
President Donald Trump speaks at a campaign rally at Des Moines International Airport, Wednesday, Oct. 14, 2020, in Des Moines, Iowa. (AP Photo/Alex Brandon)
Democratic presidential candidate former Vice President Joe Biden arrives to speak at Southwest Focal Point Community Center in Pembroke Pines, Fla., Tuesday Oct. 13, 2020. (AP Photo/Carolyn Kaster)
President Donald Trump speaks at a campaign rally at Des Moines International Airport, Wednesday, Oct. 14, 2020, in Des Moines, Iowa. (AP Photo/Alex Brandon)
Democratic presidential candidate former Vice President Joe Biden arrives to speak at Southwest Focal Point Community Center in Pembroke Pines, Fla., Tuesday Oct. 13, 2020. (AP Photo/Carolyn Kaster)
President Donald Trump speaks at a campaign rally at Des Moines International Airport, Wednesday, Oct. 14, 2020, in Des Moines, Iowa. (AP Photo/Alex Brandon)
President Donald Trump listens to supporters during a campaign rally at Des Moines International Airport, Wednesday, Oct. 14, 2020, in Des Moines, Iowa. (AP Photo/Alex Brandon)
President Donald Trump waves to supporters as he arrives at a campaign rally at Des Moines International Airport, Wednesday, Oct. 14, 2020, in Des Moines, Iowa. (AP Photo/Alex Brandon)
Supporters cheer as President Donald Trump speaks at a campaign rally at Des Moines International Airport, Wednesday, Oct. 14, 2020, in Des Moines, Iowa. (AP Photo/Alex Brandon)
President Donald Trump speaks at a campaign rally at Des Moines International Airport, Wednesday, Oct. 14, 2020, in Des Moines, Iowa. (AP Photo/Alex Brandon)
President Donald Trump arrives to speak at a campaign rally at Des Moines International Airport, Wednesday, Oct. 14, 2020, in Des Moines, Iowa. (AP Photo/Alex Brandon)
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President Donald Trump speaks at a campaign rally at Des Moines International Airport, Wednesday, Oct. 14, 2020, in Des Moines, Iowa. (AP Photo/Alex Brandon)