And back to the topic...

After days of additional thought (though not really focused thought), I believe that there are significant differences between Reep and Dem politics, but because of how the system works, it's hard to see much in the way of change.

Someone once said that democratic systems of government tend to be very stable, and the main reason for that stability is extreme inefficiency.

You never change things by fighting the existing reality.
To change something, build a new model that makes the old model obsolete.
R. Buckminster Fuller