Translation of soliloquio

Last year, many parties did not receive votes anymore and had to go to the opposition. The entire area is governed today by leftist parties and the center block is weakenng constantly during the last year.
The climb was much exhausting than I had presumed. I had forgotten that we were at high altitude where there is less oxygen and that every step required double effort. It was a great exercise.
After a short guided tour we came back to pick up our luggage and left to the airport. When the airplane took off it was already dark outside. We were surprised about the airline's good condition and service.