Stars of DNC Night 2: Warren, Bill Clinton

The Man From Hope, Bill Clinton, returns to the spotlight of the Democratic National Convention on its second night—and that worries some people. "There's the possibility of Clinton outshining Obama," one presidential historian tells Bloomberg. "But that's a minor fear." Clinton and Obama have famously crossed swords, but the campaign sees him as a powerful voice who can liken Obama's experience to his own. Here's what else you need to know tonight:

• Rumors have been swirling that the Obama team demanded to vet Clinton's speech, rumors it played down yesterday. "We have had lots of conversations with President Clinton," Jim Messina said, according to Politico. "This is a mountain out of a molehill." But Obama aides say someone is likely to see it.

• Clinton will be introduced by Elizabeth Warren, who's locked in possibly the nation's most competitive Senate race against Scott Brown. "I'm going to talk about what I've talked about for years now," Warren told ABC last month. "America's middle class is getting hammered and Washington is rigged to work for the big guy." It's worth noting that Brown didn't speak at the RNC.
• Warren won't be the only woman, either; Democrats intend to showcase many, USA Today reports, including Sandra Fluke, whom you might remember from her run-in with Rush Limbaugh.
• A number of CEOs are also on the docket, ready to affirm that an Obama presidency would indeed be good for business, the AP reports.
• Tonight will also mark Obama's official nomination. Since he ran essentially unopposed in the primary, this will simply be a roll-call of all the states, scheduled for after Clinton's speech.
• Obama himself is set to arrive in Charlotte today, meaning he could make a "surprise" appearance on stage with Bill Clinton, USA Today speculates.

(More Bill Clinton stories.)