Are the radical leftists in the Democrat party winning?

I don't know if they're winning but take a look at the cover of the latest issue of Rolling Stone. Winning? I can't say though I'm doubtful, but Celebrity status? Definitely!

they and their silly polls think they are... then get smacked in the face by reality on election day...

They are just one faction, not likely to become the majority of the party in my opinion.