Just googled up "General Election Polls". First hit on page is Real Clear Politics which aggregates ten or so polls. They show Clinton beating Trump by 12% while Sanders beats Trump by around 16%. That is after Clinton has been vilified and attacked ruthlessly and relentlessly for thirty years while Bernie hasn't even had to face the right wing GOP smear machine yet. Those monsters successfully turned the admirable military record of Senator Kerry into a shameless lie so what do you think they will do to Senator Sanders once they sink their teeth into his soft flesh?