So, what does a one-term Congressman, out of office for over ten years and defeated for the Senate by his own state's voters only two years ago, have to offer as his "accomplishments?" His law practice? Come on, Mr. Lincoln. You'll have to do better than that.
There are times in history when an individual becomes identified with something the public wants very badly. In 1860, it was a President who would finally bring this slavery issue to a head. (And for those who don't think that's what Lincoln was about, remember that much of the South didn't even wait for his inauguration to secede -- THEY knew what the man stood for.) In 2008, it seems to be a President who will do something about the slow impoverishment of the American working class and a war whose only remaining purpose seems to be to save the reputations of the men who demanded it and then fucked it up.
I don't know if Barack Obama is cut from the kind of cloth that can manage these things, but I do know that neither Hillary Clinton nor John McCain are BECAUSE of their accomplishments -- some horrible Supreme Court judges and some of the worst of the Bush tax cuts for McCain, NAFTA and a bollixed health care bill for Hillary, and the enabling of the Iraq War for both of them. The major decent thing that McCain has seriously fought for -- ending torture of prisoners -- has NOT been an accomplishment. When the country is being run by scoundrels out to enrich a few rich men, you CAN'T accomplish anything unless you're in bed with them. It's like asking a quarterback with a lousy offensive line why he can't win any games.
Lincoln couldn't accomplish much before 1860 because the politics of the pre-slavery era were devoted to compromise and desperate attempts to ignore the problem. When the country was ready to change that, he came to the fore and was able to do what had to be done. Obama may not be able to do this, but the fact that he hasn't accomplished much says more about his times than the man himself.