All three states must be flipped.
Supposedly CNN is saying only some counties will be counted, not statewide recount.
“Republican President-elect Donald Trump defeated Democratic rival Hillary Clinton by 10,704 votes in the state of Michigan, according to certified unofficial county-by-county results released on Wednesday by the Michigan secretary of state.”
http://www.newsmax.com/Politics/Trump-Wins-Michigan/2016/11/24/id/760565/