The second day of the Democratic National Convention is likely to be a historic one.
The proceedings will begin with a roll call vote at about 5 p.m. ET., which is expected to culminate when the delegates officially nominate Hillary Clinton as their party's candidate for president.
Clinton would become the first female presidential candidate of a major U.S. political party.
The first day of the convention was marked by acrimony, as spurned supporters of Bernie Sanders booed every time Clinton was mentioned. While the outcome of the proceedings today will bring no surprises, they also give Sanders supporters ample opportunity to express displeasure.
That's because the committee will record votes for Clinton and Sanders from all 50 states and territories.
If you remember back in 2008, Clinton called for President Obama to be nominated by acclamation. It was a symbol of party unity after a bruising primary campaign.
Sanders gave a full-throated endorsement of Clinton Monday night, and Tuesday, when speaking to California delegates, he admonished those who would boo Clinton.
"In my view it is easy to boo, but it is harder to look your kids in the face who would be living under a Donald Trump presidency," he told the delegates.
It's still unclear whether Sanders will make a similar gesture Tuesday night.
We'll update this story as the night develops.