While I realize that most of the sources are specifying that he's the second elected African-American governor in the United States, which is accurate, he is in fact the third to serve. P.B.S. Pinchback served as governor of Louisiana after an impeachment. Some sources are referring to Deval Patrick as the second African-American governor in U.S. history, which is incorrect.
Historygeekage aside, I'd like to welcome Deval Patrick as our new governor. He couldn't have been sworn in a moment too soon.
Now, Governor Patrick, see what you can do about certain state leaders thinking it's constitutional to vote on civil rights issues or to violate ex post facto. Thanks!