Graham Nash, Neil Young and David Crosby
Three out of four members of Crosby, Stills, Nash and Young agree: Bernie Sanders should the next president. Nash, Young and Crosby signed their names to a letter endorsing Sanders' bid for the White House. Crosby has also tweeted about his admiration for Sanders.
After Donald Trump used his song "Rockin in the Free World" during his campaign announcement, Young declared publicly that Trump was unauthorized to do so, but that Sanders was free to use it.