In a very blue county in a blue state: no Obama, Romney or PAC ads, except on the cable channels. No lawn signs. A lot of Obama bumper stickers. There's occasional ads for one of the Senate seats.
One of my friends in Cleveland yesterday told me that they're bombarded with television and radio ads. She's a left-wing Democrat, but she gets a call every couple of days from various Republican groups; all with names like "American Enterprise Heritage" or "American Heritage Enterprise".