In a Nutshell
Via Kevin Drum, this chart from the Center on Budget and Policy Priorities (CBPP report here).
That's pretty much political economics in a nutshell, isn't it?
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I think that these two graphs, combined with the federal deficit plotted against executive administration, make a rather effective case for Democratic governance.
Republicans are perfectly welcome to make thier case for the desirability of increased income inequality, but it would be nice if they didn't try to obfuscate and lie to get elected.