Final answer:
Public approval rating refers to the percentage of the public that approves of the job performance of a government official or institution. It can influence the legitimacy and support of government officials, their ability to implement policies, and their electoral success.
Step-by-step explanation:
Public approval rating refers to the percentage of the public that approves of the job performance of a government official or institution. It is usually measured through surveys or polls. The public approval rating can have a significant influence on government as it affects the legitimacy and support of government officials, their ability to implement policies, and their electoral success. For example, a high approval rating can give a president or a political party more leverage in pushing their agenda through Congress, while a low approval rating may lead to decreased public trust and hinder a government's ability to govern effectively.