Do modern-day Buddhists take "Mara The Evil One" literally?

I find that a good number of believing Christians and Muslims think that Satan literally exists and is a very real actor in the real world. Is "Mara the Evil One, the Tempter" a rhetoric device in Buddhist tales -- a personification to enable the construction of a certain kind of parable? Or is "Mara" understood by contemporary Buddhists as an evil being who actually exists in the physical plane that we inhabit?