If you examine Sander's positions, I don't think you'll find he advocates the conversion of the USA to actual socialism.   Even if he did, a president can't really make that kind of radical change in our system of governance.   By analogy, he's one oarsman on the left side of the boat so to speak.   More than anything he would be a strong advocate for policies that serve the middle 80% and a counter- balance to the undue support the upper 10% now enjoys by our present politicians.    I don't agree with all his policies either, but I do believe he is honest and sincere in his support of the middle 80.  Certainly better than Clinton Trump, right?