I think the conservative base thinks he's a bad President, an incompetent leader, and a liberal. Some people think he's a liar. I suspect most people think he's broken promises he made to get himself elected.
Myself...I think he is a liberal, he's a liar, he'll do and say anything to get elected and that he's bad for the country on the domestic front and I think he's got no clue in regard to foreign relations.
Other than that...he's not so bad.