I used to have a similar view, but the more I read of the past and watch current events unfold, the more convinced I am that there is little difference between the two parties, at least at the top (there are many good Republicans at the state and local levels).
The rhetoric makes it sound like they are different, but in actions, they are not.
I believe that they are moving us towards a global government, which will be brought about by regional governments, brought about by regional trade agreements (like the European Union). The policies of "free trade", open borders, increased foreign aid, and expansionist government have been the major accomplishments of the last three administrations. All of these things move us closer to a "New World Order".
I realize people will disagree and that's fine, since I was nieve to the big picture for a long time. After a lot of reading, I eventually woke up to what I believe the truth to be.