Denver (CBS) - It will be a big night at the Democratic National Convention in Denver. Delegates will hear from Vice Presidential nominee Joe Biden, and former President Bill Clinton. Tuesday night was the former First Lady's big night.
Wednesday's roll call gives Democrats the chance to answer the unity question.
"Barack Obama is my candidate and he must be our president!" Hillary Clinton did her part. Greeted as heroine in the convention hall, her prime-time address was a loud, clear call to her supporters to back her former rival.
"Whether you voted for me or you voted for Barack, the time is now to unite as a single party with a single purpose," Clinton said in her speech Tuesday.
To avoid what could potentially be an ugly scene, the roll call vote will be called off early. Some states will be allowed to vote for both Clinton and Obama, but it's expected the former First Lady will end the the process by recommending Obama's unanimous nomination.
When asked if the party will be united after the convention, Vice Presidential nominee Joe Biden says "it's united - she united it!"
The heavy-hitters continue lining up behind Obama Wednesday. Newly-minted running mate Joe Biden gets his turn on center-stage, hoping to build on Clinton's success.
But Bill Clinton's expected to steal the spotlight. The former President is said to still have bruised feelings from the primary fight, and many wonder if the tension between he and Obama will leak into his speech.
Analysts say it's important Democrats get their house in order quickly.
The convention is supposed to be about preparing for a general election show-down, not healing wounds from the past.