Leaving aside the issue of whether or not he legitimately lost those primaries (which is certainly debatable at least in 2016), I think he would have not been a very effective president because both parties in congress and the judiciary would have done everything in their power to oppose any social welfare policies he might have tried to get implemented.
Obviously, he would have been better than Trump, but I do not think he would have achieved much. In fact, I think he would have achieved less than Carter.
Leaving aside the issue of whether or not he legitimately lost those primaries (which is certainly debatable at least in 2016), I think he would have not been a very effective president because both parties in congress and the judiciary would have done everything in their power to oppose any social welfare policies he might have tried to get implemented.
Obviously, he would have been better than Trump, but I do not think he would have achieved much. In fact, I think he would have achieved less than Carter.