I have a new story about the escalation of fighting between the Romney and Giuliani campaigns that took place over the weekend. Each campaign blames the other guy, and I asked them to send me the evidence they believe supports that conclusion:

Both sides have some good examples to cite…But looking over the lists, it appears that Romney, the sunny and positive optimist, has been a bit more persistent and bare-knuckled in his attacks on Giuliani than Giuliani, the tough-guy veteran of rough-and-tumble New York politics, has been on Romney. That doesn’t mean the attacks were illegitimate, or false, or out of bounds; in fact, nearly all were based on at least a few facts and involved issues, like immigration and taxes and social questions, that are important to Republican voters. But it’s hard to deny that in the last two months, Romney has kept up a fairly steady stream of criticism of Giuliani, more than the other way around. Over the weekend, finally, all hell broke loose.