Voting for unethical, corrupt candidates and politicians

Why do people continue to vote for obviously corrupt and unethical political candidates?  One explanation is that they rationalize (excuse, minimize) it.  Why? Because it will put more $ in their pockets (vote buying)?  Because they are emotionally attached in some fashion to the perpetrator (charismatic, cult of personality, great speaker, handsome, etc)? Because they emotionally attached to the ideology of the politician?  Of course, only politicians with these "links" to the voter get the benefit.  The linked website provides numerous example and also suggests that voters in some areas have accepted the 'culture of corruption."   Arguably another example is Alcee Hastings. "Ethics Alarms" is a great website. Check it out.