"I have come here to make it as clear as possible as to why I'm endorsing Hillary Clinton and why she must become our next president", Sanders told a roaring crowd.
After an often bitter campaign, Sanders said he will do everything he can to make Clinton "the next president" of the US.
"She's a crook, and I'm not going to vote for a crook", Bailey said, adding that she would write in Sanders' name on the November ballot.
She maintained, "We are joining forces to defeat Donald Trump!".
Matthew Healey/UPI/NewscomToday Bernie Sanders has officially declared his support for Hillary Clinton, his former competitor for the Democratic presidential nomination.
Sanders gave his formal endorsement at a rally in New Hampshire, where in February he landed his first major victory over Clinton during the often contentious primary race.
With national polls showing Clinton leading Trump by only 3 percent, KCCI political analyst Dennis Goldford said the main threat to Clinton is Sanders supporters staying home. Trump is expected to announce his vice presidential pick in the next few days. Is she clapping for Sanders or herself? 3.
The meeting also is likely Clinton's last chance to hold court with Democratic leaders in Washington before they recess for the summer.
The holdout was seen as part of an effort by Sanders to secure changes to the Democratic Party platform that were more in line with his progressive ideology.
Elle Kurpiewski, Office Manager for the Democratic Headquarters of the Desert says not voting is the worst case scenario.
Many of Mr Sanders' policies have made it into the proposed Democrat manifesto, including a $15-an-hour minimum wage, tougher restrictions on Wall Street and an end to the death penalty.
Kathy Bouchard said her inability to support Clinton had everything to do with trust. Hillary Clinton, the presumptive Democratic nominee.
Lynch repeatedly said she wouldn't discuss specifics of the FBI's investigation.
"I'm so excited", said Crystal Paradis, of Portsmtouth. "She talks issues, not just "great America" and so forth".
CNN has shared footage of Mr. Sanders' endorsement of Ms. Clinton.