Claim: "Forty years ago ... about half of congressional districts were genuinely competitive. Today, only about 10 percent of House races on Cook Political Report are listed as 'toss-ups' or 'lean' to one party."
Fact-check: Barrow: Congressional elections less competitive
Verdict: half-true
Organisation: PolitiFact
Author: Willoughby Mariano
Date published: 2012-06-04T00:00:00