Should Barack Obama NOT presume he will be the Democratic presidential nominee?

If the rich get their tax break extensions, if he does not come out more strongly on extending unemployment benefits and if he does not stand up to Republicans' "beloved" China in this Korean conflict, I would be very lukewarm in my own personal support for him.We worked too hard to get who we thought was a Progressive to be complacent with this "Bush Lite"! I like Tom Daschle and others.