What do they say about "a day in politics?

Question

They just said on tv "you know what they say about a day in politics". What do they say?

Answer 1

I dunno...Like a night in the sewer?

Everyone keeps asking riddles, but we never get the punch-line. I'm still trying to figure out what Barbara Bush and Michelle Obama could possibly have in common.

I'm begining to think that it was a serious question and the asker said Barbara instead of Laura.