President Obama gets his shot at the Democratic National Convention Wednesday night -- and early signs are that he could come out swinging. He is due to speak along with Vice President Biden, VP nominee Tim Kaine and a familiar face to Philadelphians, ex-police commissioner Charles Ramsey. Here's what we'll be watching for on day three:
-- An aggressive Obama: It's been obvious for weeks that Obama has been eager to jump into the fray. The analytical president hasn't tried to hide his disdain for the brash Donald Trump, and the incumbent knows his own legacy is on the line in this race. Michelle Obama used a velvet glove to lift up Clinton and chip away at Trump in a Monday. Her husband now has a high bar to clear. Already this morning he was warning Democrats not to take victory for granted. With the president's job approval numbers rising, he and Michelle could be two of Clinton's most potent weapons in this race.
-- Biden on attack: It's usually the current vice president's job to be the attack dog, but Biden seems ready to throw elbows, too. Trump "knows nothing about foreign policy," Biden told MSNBC's Morning Joe Wednesday morning. (The VP was a longtime member, and chairman, of the Senate foreign relations committee). Biden was often called Pennsylvania's "third senator" because of his close ties to the state, so he should get a warm reception, but his gregarious ways mean he's often off script -- there's no telling where his speech may end up.
-- Can Kaine shine? This should be a night for a national introduction of Kaine, a Virginia senator who has respect on both sides of the aisle, but is hardly a household name. Can he stand out on the same night that two party luminaries take the stage? The knock on Kaine (or perhaps a quality the divisive Clinton wanted) is that he's kind of dull. What impression can he make? One bet: watch for Kaine to show off his Spanish skills. He learned the language while doing missionary work in Honduras.
-- Familiar face: Former Philadelphia police commissioner Charles Ramsey, who recently chaired a presidential task force on policing, is due to speak tonight at a time when police-community relations are roiling the country. It's not an easy task to strike the right balance on these issues, particularly as they turn sharply political, with Republicans cheering "blue lives matter" at their convention last week and "black lives matter" chants ringing out at the Democratic gathering Tuesday night.
-- Will Bloomberg help? Former New York Mayor Michael Bloomberg will formally endorse Hillary Clinton tonight. He's a big name -- but will he actually help Clinton? Bloomberg is well-liked in liberal enclaves of the northeast, but those are areas where Clinton should already clean up. On the other hand, he's public enemy number one for second amendment voters and for many Americans who see him and his limits on super-sized sodas as the embodiment of east coast elitism. Clinton needs to expand her appeal among blue collar white men and to bring Bernie Sanders supporters back into the fold. Will she really get a lift from a billionaire New York businessman?
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