Oh, he is a registered Democrat too.
http://www.vox.com/2016/7/9/12129202/michael-flynn-vice-president-donald-trumpLike Trump, Flynn is a harsh critic of President Obama and the American political establishment — Flynn’s 2014 retirement came after numerous reports of him butting heads with his colleagues.
Like Trump, Flynn sees jihadism as America’s greatest threat, with his rhetoric often veering way past alarmism into irresponsibility. He said in one 2015 Fox News appearance that "I have been at war with Islam or a component of Islam for the last decade."
And like Trump, Flynn has an odd affection for Russia and its authoritarian government. Flynn has spent much of his time since retirement cozying up the Putin regime and he’s a frequent guest on its English-language propaganda channel, RT (formerly known as Russia Today).
