A poll has asked 2000 Americans, all adults, which well-known superstitions they believe and which ones they don't.  Superstitious beliefs may not be as popular as you might think.

A third of Americans still believe if you find a penny on the ground and pick it up, it's good luck but less than a forth believe it is bad luck for the bride and groom to see each other before the wedding.  Surprisingly low is the number of people who believe knocking on wood is actually good luck, only 20% of those survey said they did.  Only 14% thought opening an umbrella indoors was bad luck, the number of people thought breaking a mirror was bad luck.

The survey also found younger people are more superstitious than older folks and Democrats are more superstitious than Republicans.

[Via:  Harris Interactive]