I believe the answer you're looking for is the Amazon Basin.
The answer is analyze the problem
United States,Alabama,Florida,Louisiana,Mississippi,Texas. Cities Huston,Mobile,New Orleans,Pensacola,Tampa Gulfport, Largest city Huston.
They are over populated states, with high electoral votes. which are mainly democratic states.
A thermometer? Maybe inferred on the plane or aircraft that took you over the water. There are many ways