Question from Shorty: Political Endorsements

Shorty's Question about Politics

I have a confession:  I am not political savvy.  Before our presidential election, I only voted because it was a requirement as an American citizen.

This year, however, I decided to educate myself by attending political forums and listening to candidates.  Also, I am conducting more research on candidates instead of listening to all of the media sources.

I do have a question, though.  If a shady elected official endorses a candidate in the election, how credible is that endorsement really?  Can someone enlighten me?