Senator Bernie Sanders of Vermont raised just $25.8 million for his campaign in April, down by more than 40 percent from the previous month, as he faces an increasingly narrow path in the race for the Democratic nomination for president.
The April total, released by his campaign on Sunday, brought Mr. Sanders’s cumulative fund-raising haul to $210 million from more than 2.4 million donors.
He raised almost $46 million in March, his best month yet in a contest during which he has frequently brought in more money than his Democratic rival, Hillary Clinton.
Earlier this week, Mr. Sanders revealed in an interview that he would be laying off some 255 workers, saying he would focus his resources on competing in the remaining 14 contests, particularly in California.