So, in what appears to be a serious tactical error, during the SC-01 Congressional debate Mark Sanford attacked his opponent Curtis Bostic  for his “poor” attendance record while a councilman. Claiming he missed “20% of his meetings and sometimes 30%.”

The problem? Bostic’s wife has cancer.

His son, Daniel Bostic, took to Twitter offended with the implication that his father absence meant he was a poor public servant. It looks like it hit home:

https://twitter.com/debostic/status/317430259656040448

Not gonna lie - I’m still infuriated over Sanford attacking my dad for missing council when my mom was dying. #SC1 #SC01 #tcot #scpol

— Daniel Bostic (@debostic) March 29, 2013

And

I can’t imagine that Stanford’s opposition research team feels good right now. At least I would hope that is the case.