Don't worry. With the right PR wo/man he will be able to use this experience in the future (mistakes of youth and all). He will probably get hired and serve many terms as a congressional representative. After all, he is exactly the type of person the corporate machine wants in office.
Most likely what he will do is change jurisdictions and political surroundings. I bet he moves to a different state and just moves on working political campaigns as he goes until he re-establishes himself.
I think you are correct in questioning his ethical fiber. Unfortunately it will most likely not change over time. However, I have no doubt that a person with this much audacity will continue down his chosen path.
Hopefully, he stays well away from where I live.
Go forth and do good things,