Schnur, Senator McCain's national communications director in 2000, writes in the NY Times. His topic is not about the physical pangs of hunger, but about the desire to win within the respective parties.

"In both 1992 and 2000, the opposition party would have chewed off its own arm to win. So they did. The satiated incumbents, meanwhile, simply burped and went home. Now, eight more years later, the dinner fork and knife are back in the hands of the Democrats. Look no further than the way the potential third party candidates are being treated. In 2000, most Democrats found Mr. Nader to be amusing. In 2004, he was aggravating. When he announced earlier this year that he was thinking about another campaign, he was almost assaulted."
 
Here's a link to the full article. Read the comments, too.

http://campaignstops.blogs.nytimes.com/2008/05/20/the-politics-of-hunger/