They base their reasons on claims of sexism... they feel like something was "stolen" from Hillary (regardless of the fact that Barack has followed the rules set out by the DNC). They are blind to the fact that Hillary's campaign strategists were incompetent (Mark Penn reportedly didn't know that the California primary was proportional and not winner-take-all) and didn't have a plan for after Super Tuesday.
They hate Barack Obama for winning. And somehow they have conflated all of the sexism they ever experienced in their lives with this presidential campaign.
If you want to see some of the out-of-control vitriol being spewed toward him, go to Hillary supporter site Hillaryis44.org, where they even use sexist tactics against Michelle Obama by calling her "lantern jawed." (Plug your nose before you go in. This has become a hate site.)
Some misguided Hillary supporters have thought it appropriate to play the race card against Obama in Puerto Rico.
So, for those Hillary supporters who think that John McCain would better serve their interests, I urge them to read the following post written by commentator Paul Rogat Loeb.
Remember when John McCain slimed your daughter?
Reasons abound why you should do all you can to defeat John McCain--but for you, it should be personal. Maybe you've forgotten in the heat of the Democratic contest. But remember McCain's cruel joke about your daughter, when Chelsea was 18 and vulnerable? This alone should give you every reason to stand against McCain -- and nothing to boost his chances:
McCain made the joke at a 1998 Republican Senate fundraiser. "Why is Chelsea Clinton so ugly?" he asked. "Because her father is Janet Reno." Chelsea was a lovely young woman then, and is even lovelier now. But when you're 18, an attack like that can be deeply wounding. It's outrageous for McCain to slime an innocent young woman who'd done nothing to offend him -- just to throw red meat to a Republican crowd.
Sure, McCain apologized after a flurry of media coverage, but talk of that sort is cheap. It's like his using the excuse that he'd had a long day, after telling his own wife at a 1992 campaign event: "At least I don't plaster on the makeup like a trollop, you c$%t." That was his public response to her teasing him about his thinning hair. But the Chelsea "joke" was from a prepared text, not accidental. It's a window into McCain's cruel side. Your lovely daughter was the target of his abuse.
Read more here