Question: In what year did the co-founder of the RedState group blog launch his english-language online magazine?

Related documents: [0]  [DOC] The Federalist is an English-language online magazine that covers politics, policy, culture, and religion. The site was co-founded by Ben Domenech and Sean Davis and launched in September 2013. Domenech serves as publisher of "The Federalist". [END] 
[1]  [DOC] Ben Domenech (born December 31, 1981) is an American conservative writer, blogger and television commentator. He is the founder and the publisher of "The Federalist", host of "The Federalist Radio Hour", and writes "The Transom", a daily subscription newsletter for political insiders. He also co-founded the RedState group blog. [END]  
Answer: 2013
2013