The only people denying that there is an alt right are the regressive alt right cons and Fake Alt Right Media outlets like Breitbart, etc. We know that the fake news generated by Trump and his allies are all lies to engender an Alt Right agenda to destroy the American Republic.
Part of the "agenda" is to suggest Obama and the Clintons and their real American supporters have somehow subverted our American political processes. That lie will be rejected this November.
One by one, the anti-Trump resistance is checking off policy goals despite rabid opposition by the far right and alt right anti American forces. The tax and budget bill were passed by partisanship, despite the screaming from the far right. Gorsuch has turned out to be an appointment that most Americans support.
The pro Trump alt right is using fake news to suggest what he did was not as bad as Clinton or Nixon. That is a lie.
The agenda is to downplay the seriousness of the Trump disaster.
AL, NJ, WI, VA, in national and state races the Dems have been steadily winning since last fall as the Dems have moved from the left-center toward the center will the idiot alt right cons keep trying to run far right weirdos like Moore and Blankenship.
All that hopey-trump nonsense is being flushed down the toilet.