can you explain exactly how a presidential election is (or could be) gerrymandered? Aside from two (Iowa and Maine) all the states award all of their electoral

can you explain exactly how a presidential election is (or could be) gerrymandered? Aside from two (Iowa and Maine) all the states award all of their electoral votes to the winner of that state's popular vote. So unless the shapes of the states change, there's no way to gerrymander.