I don't think they no longer exist but they have been greatly marginalized. Basically, in our last election we had a choice between the madman Trump who is not really a Republican, just a maniac with no core beliefs at all, and a sort of ordinary Republican in Hillary Clinton. The Clintonistas have jerked the Democrats way over to the right, with the prevailing theory being "let's be in the middle and appeal to both sides" and so until those clowns are moved out of the way...well...we have this choice between "wacky Republicans" and "Clinton Republicans."

So, to that extent there is only one party. The Republicans do have a path to victory in their "red" states and as we saw in 2016 have a path to winning a national election if the Democrats act like morons.

So, if you run a Hillary Clinton against a madman like Trump...you will lose every time. Let's see what happens in the midterms before we buy plane tickets.