The past Presidential election was one evidence. Political analysts have long known that when the economy is good, the person in office will most likely be reelected. If the economy had been struggling, the incumbent would much more likely have lost.
Most people agree that things are looking pretty good.
Our government is involved in no major war, and political leaders are making efforts to address the major domestic problems of the day. Yes, things seem to be going well. But on the other side of the coin we see many problems. There has been a rash of investigations involving political leaders' unethical behavior. Driving on the highways is more dangerous than ever because of drivers who become upset at other drivers and try to do them physical harm.