A picture comes out showing your Father-In-Law with someone who is running to replace you...
A) Laugh and say they are both public figures and odds are they ran into each other at a function, it doesn't mean they are pals or he want's to see her win. Heck he is a Chicago Alderman, he has had lots of pictures taken with lots of people. Big deal.
B) Issue a classic 'no comment' and make it a story.