The reason I nearly always support the president, is that he is usually a decent leader beset by vipers. All the hate he gets makes it harder to do anything as a country, it compromises his ability to push an agenda, any agenda.
If there is any decent impulse within a POTUS, what will bring it out? Wide support from the populace. What will squash it and make him vulnerable to the vipers? constant criticism, cynicism and hate.