What has been the most common reason for one party losing control of the national government

The answer is: The country suffers from severe economic problems

During severe economic problems, a large of  portion of people would exprience either unemployment or a decrease in their net salaries.

When this happen, people would start to blame whoever in power for the economic problems. If the government is controlled by a certain party, that party would gradually lose voters' support and unable to secure position in the government body.

hello,

your answer is ready

i believe its either the first or third option but i'm leaning more towards the third option:

the first excerpt makes a logical appeal, while the second excerpt makes an emotional appeal.

your pal

~papaguy