To the first part......Just about anybody could do a better job than our present POT57US. To the second part.....it remains to been seen who will be elected.
You word your question in such a way that you are supposing you know what the present President is going to do...........do you really think you do know? He hasn't done much that he said he was going to do up to this point that has benefited me. Has he benefited you? And just what has he proposed to do, that will make us better off? Decrease the debt?....or increase it? Has he lived up to the Nobel Peace Prize that he accepted? or is he deploying troops even now? He has chastised both Supreme Court, and China in public. He steps on his dick every time he speaks without a telepromptor.....(which should lead to some very interesting debates, depending on how controlled it is).

OTOH, the R side of the ticket is bleak, IMO. But that doesn't mean that you won't end up with a Republican next go-round. For me, my vote will be a decision I'll make at a later time. And the question that I'll be asking myself and answering with my vote will be, "Which candidate will do the least damage to the country?" I am not even remotely considering that any of the present candidates will make us better off. One thing I won't be doing is blindly following a Party letter.