Fact-checker agreement during U.S. presidential campaigns

How often the primary fact-checkers in media reach similar conclusions

2008 2008 2008 2012 2012 2012
Fact checkers No. of ads No. of claims Agreement (%) No. of ads No. of claims Agreement (%)
FactCheck.org, Fact Checker, PolitiFact 2 6 100 13 17 100
FactCheck.org, Fact Checker 5 9 100 12 49 98
Fact Checker, PolitiFact.com 1 2 100 8 19 95
FactCheck.org, PolitiFact.com 18 36 98 6 12 100
TOTAL 26 53 39 97