McCain will have a distinct logistical advantage, Republicans are quick to note. As the ranking Republican on the Armed Services Committee, he will deliver the second statement and the second set of questions, and will have the right to interject at will. Allies said he is likely to toss out Clinton's statement from the September hearing that it would take "a willing suspension of disbelief" to accept Petraeus's security assessment, and Clinton -- lacking seniority -- will only be able to watch.
Joe Lieberman, also on the Committee, likely will back up McCain.
Obama ranks 13th in seniority on the Foreign Relations Committee:
Obama may be in even worse shape. The Foreign Relations Committee, famous for its long-winded and assertive chairman, will not begin its hearing until 2:30, and if all members show, Obama would be 13th to speak -- possibly after the evening news. Biden made it clear Friday he plans no deference to the junior senator from Illinois, saying that would be "putting a big light up, saying this is all politics." Obama aides said Friday he had not asked to be moved up in the questioning.
Obama supporter John Kerry downplayed the significance for Obama. Obama, apparently, doesn't agree, and like the other two candidates, "has been preparing diligently."
Obama told reporters aboard his campaign plane Friday that he will press Petraeus and Crocker to answer a question pointedly posed in September by former Armed Services Committee chairman John W. Warner (R-Va.): Has the Iraq war made the nation safer?
"Essentially, what we've seen both from the administration and from John McCain is a trumpeting of improvements from a horrific situation to simply a unsustainable and intolerable situation," Obama said. "It's looking at the entire picture that I think is the obligation of the president."
McCain's strategy will be to claim ownership of the surge:
Committee Republicans said McCain is ready to challenge Clinton on her statements from September. And he is likely to take ownership of the "surge" strategy that sent tens of thousands more troops to Iraq and refocused their mission on civilian security.
"The two big themes will be: 'Did my theory or belief that more combat power lead to a more stable Iraq? Did that work?' And secondly: 'Okay, if we change strategy, if we adopt the Clinton-Obama pathway, what's the most likely consequence?' " Graham said.
As for Hillary's focus:
Clinton spokesman Philippe Reines said the senator will press Petraeus and Crocker on what she sees as a lack of political progress in Iraq, the rising influence of Iran and "the strain on our military caused by the continuing presence of large numbers of troops in Iraq."
What's it all mean? Not much, except for a lot of soundbites on the evening news and cable talk shows.