Do political beliefs divide the U.S. more than race?

In the U.S., Democrats and Republicans often come close to blows when facing against each other. However, do biases against political parties weigh stronger in American minds than racial biases?

Researchers from Stanford University say yes. In two separate, albeit limited, experiments, researchers found that people held stronger biases against those of different political parties than against races different from their own.

Hostile feelings between the two political parties are common. We see them every day on television talk shows, where members of the two parties are always in conflict with each other. We see it in our government, when politicians constantly clash over key national issues -- and that divide is growing.