The UN will be a significant test as to how well he continues to juggle the demands of the new politics.
Klobuchar of Minnesota will announce the suspension of her White House campaign in Dallas, Texas, where she will publicly back Biden, a campaign aide said.
“Pete is heading back to South Bend and will give a speech tonight suspending his campaign,” the campaign aide told Reuters.
Vice President Mike Pence will be among the speakers at AIPAC.
For Biden and other moderates who argue that Sanders is too liberal to beat Trump and who have been trying to blunt his momentum, however, the job has become much harder.
The essay netted a young Pete Buttigeig $3,000 after it won first prize in a national competition.
Zimmerman claims that the two Democratic candidates have defamed him in an attempt to gather votes from the African-American community.
Some of his rivals have made clear they see the televised debate as their best opportunity to subject Bloomberg, who has been rising fast in the polls, to greater public scrutiny.
Recent polls in New Hampshire put him in second place, after Bernie Sanders.
Biden said Trump would have an easy time ripping into Sanders in a general election campaign, and Sanders would drag down other Democratic candidates in federal and state races.