Nick at Nite was a staple of our childhood's back in the 1980's and 1990's. One popular show on the early Nick at Nite lineup was Alfred Hitchcock Presents. It was so popular that the powers that be at Nick at Nite decided to run a marathon on Halloween Week 1990 along with a contest for the viewer to guess how many people kick the bucket during said marathon to win a murder mystery cruise. Also, you're probably wondering why Wink Martindale is involved in this based on the image right?
Accompanying Nick at Nite 35th Anniversary article with some details about this contest via The Retro Network.