A politician is a person who works in government and tries to make decisions that will benefit and represent the people in their community or country. Full definition
For example when companies promise hefty donations to the parties of politicians in exchange for favorable decisions. (politics.stackexchange.com)
The general rule for politicians in the modern era is that if a scandal remains on the front pages for more than seven days then the figure in question has to go. (politics.co.uk)
So you constantly vote for politicians who don't have your best interest in mind just because they share you religious views or they tell you that to get your vote? (religion.blogs.cnn.com)