Realistically Senator Clinton does have a chance. The numbers are fairly close, close enough that a few more months of campaigning might make the difference at the DNC, since Senator Obama is unlikely to get the delegates he needs to clinch the nom before then, though he is very close. Steadily the polls have been turning on Senator Obama in certain key demographics (specifically white women). A few months ago Senator Obama was more electable than Senator Clinton when running against Senator McCain. Those numbers have changed some, more in favor of Senator Clinton. But the poll movement could go back the other way soon. Right now much of the movement towards Clinton is due to the perception that the media and Senator Obama's supporters are beating up on her for her...mis-truths.
Whether you like either candidate or not, the race is close and she has every right to stay in.
That is a great picture BTW.