Is that there's always a next election. Not only is it the next chance for the party of the short end to make a comeback, but it keeps the incumbents honest. The Democratic Party is in a very low point right now, much like the Republicans were in Clinton's second term. The comparison that I like to make is to the midterm election in Clinton's first term. That was the year we had Newt Gingrich coming out with his "Contract for America" and riding voter unrest into a Republican majority in Congress. The big reason for that was a combination of the Clinton Administration trying to do too much too fast (Pushing for removing the ban on homosexuals in the military) and the Democrats in Congress fighting amongst themselves as to whose agenda had top priority.
If the federal government rushes too far to the right, expect a major backlash in 2006.