Romney today was gracious, lavishing praise in prepared remarks on the man who defeated him.

"This is a man who tied his political fortunes to the fortunes of his country in a time of war," Romney said. "Such courage is not always rewarded in politics, but it was this time – and that is a credit to both the man and to the party he will lead in the election of 2008."

The difference was especially stark compared to the last GOP nomination battle in 2000. As opposed to the week Romney took before endorsing, it took two months for McCain to get behind George W. Bush after that bitter contest. And when he did so in May of that year he initially declined to use the word "endorse." Only after being asked by a reporter why he wouldn't formally offer his blessing did McCain say "I endorse Gov. Bush" -- and then he said it over and over again as if to show his annoyance.