Sanders raised $25.8 million in April -- short of his campaign's hauls of $44 million in March and $43.5 million in February, his campaign said Sunday.
Clinton's campaign said Monday that they brought in $26.4 million in primary funds in April. Clinton, who is slowly starting to turn her focus to the general election, starts May with $30 million in the bank. The Sanders campaign did not release that number.
But Sanders' dip from the previous month comes as the contest approaches its last states to vote, with the Vermont senator increasingly trailing Clinton in votes, pledged delegates and overall delegates, and suffering defeats in five out of six recent East Coast primaries, including New York.
Clinton's operation, through a joint fundraising venture, also raised $9.5 million for the Democratic National Committee and state parties in April. Much of that money was raised at two fundraisers with George and Amal Clooney in California, events that Sanders' campaign sought to turn into a liability for Clinton.
Robby Mook, Clinton's campaign manager, said Monday that Clinton "has always made it a priority to help Democrats up and down the ballot which is why we are proud to be helping to fund the coordinated campaign that will make up the heart of the Democratic organizing efforts for local, state and federal candidates this fall."
Sanders' campaign raised money off Clinton's fundraisers with Clooney, knocking the former secretary of state for headlining an event where the top ticket cost around $350,000. And Sanders supporters protested outside the event, including showering Clinton's motorcade in 1,000 single dollar bills.
To date, according to the Clinton campaign, Hillary for America has raised $213.5 million in primary funds and more than $46 million for the DNC and state parties.
Sanders' path forward
A defiant Sanders has insisted he'll continue through California's June 7 primary in a bid to win -- or at least carry as much influence as possible into the Democratic National Convention in Philadelphia.
His campaign said after April, it has received 7.4 million total contributions from 2.4 million individual donors, totaling $210 million.
It pointed out that his nearly $26 million April haul topped Clinton's $21 million in March. Clinton has not yet released her April numbers.
"What our campaign is doing is bringing millions of Americans into the political process," said Jeff Weaver, Sanders' campaign manager, in a statement accompanying a news release announcing the April numbers.
"Sanders is the candidate with the most energy and excitement," Weaver said. "He is the candidate with the best chance of winning in November. He is the candidate who is in the best position to bring a new generation of voters into the democratic process and restore the faith of working-class voters that we can have a government that works for all of us, not just the 1 percent."
There are 14 Democratic contests left in states and territories. Next up is Indiana on Tuesday. Last is the District of Columbia on June 14.