The "Incumbency Effect" Isn't So Effective This Year

This could be year that reverses the trend of more than 90 percent of incumbents in the House of Representatives winning re-election.

Since 1976, incumbents in the House won re-election more than 9 out of 10 times - political scientists call this the "Incumbency Effect."

Click Here for the NPR story on why this year is shaping up to be different - especillay for incumbent Democrats.

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