They may be similar when it comes to protecting U.S. jobs and opposing trade treaties that ONLY benefit the 1%, but other than that… there are VERY few similarities.
Sanders’ supporters don’t want to defund Planned Parenthood or force women to have coat hanger abortions.
Sanders’ supporters don’t think there’s much humanity it brutally breaking up families in night time raids in order to fill detention centers and toss Latino human beings back over the (imaginary) border.
Sanders’ supporters understand that Black Lives Matter.
Sanders’ supporters don’t hate all Muslims. Many of us understand the War on Terror to be the fabrication that it is, likely brought on by a False Flag which means that NO Muslims did a damned thing to any Americans in the first place!
Sanders’ supporters don’t see Mother Nature as a thing to use until She is used up… they recognize that global warming is a major threat and wish to see funds, programs, and human initiative remedially aimed in THAT direction.
Those are the few platforms that come to mind; but you’d be hard-pressed to find the average Conservative (Trump supporter) resonant with these positions.