It goes back much farther than 20 years... at least 100, or more.
The 2 party system is the biggest joke of all. There is a glimmer of hope...proportional representation. It is not widely used in the US, but is more common in Europe, and other countries. That's why you may see news about a country having problems forming a workable government after an election, because the parties are forced to work with whomever the people elect. As opposed to our 2 party system where we are forced to choose between the 'lesser of two evils'!
This group has been working to promote it in the US, and give good examples, and information.