Scott Walker, the most devoted acolyte of the Great and Wonderful Koch Dynasty, would begin with a huge edge in fund-raising. He has done nothing to offend any core GOP constituency; he is a political survivor in a swing state in a 50-50 national election; he has shown himself fearless in confronting liberal interest groups. He will not make fruitless efforts to seek compromise from people who think him a demon.
He would be perfect for establishing permanent electoral majorities for a monolithic, authoritarian GOP -- which would win as Democrats are rendered increasingly irrelevant by culling the vote.
Scott Walker trails Hillary badly in most of the GE polling. He very well could be the next President, but as a Democrat, your melodramatic all-is-doom narrative is both nonfactual and utterly bizarre. This seems like a mix between a Freeper's confidence of GOP victory and a DailyKos/MJ bitterness.