(Bloomberg) -- Cory Booker said he could end his presidential campaign by Tuesday unless he is able to reach his goal of $1.7 million in donations within the next 36 hours.Speaking on CNN’s “State of the Union” on Sunday, the New Jersey senator said that despite an “avalanche of support,” his campaign needed “some more help” from contributors. His campaign website shows he’s about $150,000 short of the amount he targeted on Sept. 21 to have a viable path to victory.Although he has languished at 2% or 3% in most polls and is struggling in fund raising, Booker has qualified for the October debate of Democratic presidential candidates. In the CNN interview, Booker said he has also met the threshold of 165,000 unique donors required to participate in the November debate.Booker also rose to the defense of the Democratic front-runner Joe Biden, saying the accusations from President Donald Trump that the former vice president acted improperly to benefit his son Hunter’s business interests in