It depends.
If minorities are secretly so upset about the burning cities that they secretly swing red, it’s definitely possible.
The issue needs to be brought up by Trump in the debates.
“You’ve voted Democrat for 40 years in your city, and what have they done for you? NOTHING.”
40 years is for Portlandia. Democrats have run most of these Blue cities since the sixities; 50 - 60 years at least. The stupid is so intense, it burns. Here's the year their last Republican mayors left office
Chicago 1931
Los Angles 2001
San Fransisco 1964
Detroit 1962
Seattle 1969
Portland 1980
St. Louis 1949
Philadelphia 1952
Minneapolis 1961