What political party would you say allows more idealogical diversity, Republican or Democrat?

Right now there’s a part of Republican party that’s knee-deep in “self-policing” mode.

Creationists? Out!
Christians? Out!
Birthers? Out!
etc.

Meanwhile, the democrat party is home to everyone from moderate liberals to raving moonbats. And we’re wondering how Obama could have possibly gotten elected. Good luck guys.