<iframe src="http://www.npr.org/player/embed/1600683/1600684" width="100%" height="290" frameborder="0" scrolling="no">
Democratic presidential candidates have discovered a way to fire up the Democratic core: vilify the incumbent and all he stands for. NPR's Don Gonyea reports on how talk about President Bush and politics makes the electorate think in extremes.
NPR thanks our sponsors
Become an NPR sponsor
Support The Programs You Love