Bernie Sanders Bernard (Bernie) SandersPush to end U.S. support for Saudi war hits Senate setback Sanders: 'I fully expect' fair treatment by DNC in 2020 after 'not quite even handed' 2016 primary Sanders: 'Damn right' I'll make the large corporations pay 'fair share of taxes' MORE’s presidential campaign raised $15.6 million in the month of May, ending the month with more than $9.2 million in cash on hand, Federal Election Commission reports show.

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The influx of cash came even as the Democratic primary for president wound down, with Hillary Clinton Hillary Diane Rodham ClintonSanders: 'I fully expect' fair treatment by DNC in 2020 after 'not quite even handed' 2016 primary Sanders: 'Damn right' I'll make the large corporations pay 'fair share of taxes' Former Sanders campaign spokesman: Clinton staff are 'biggest a--holes in American politics' MORE becoming the party's presumptive nominee earlier this month.

Hillary Clinton’s campaign raised $28.28 million in May and has more than $42 million in cash on hand, according to monthly fundraising totals released on Monday afternoon.

Her campaign noted, in a release breaking down the fundraising, that the average donation was about $44.

Meanwhile, presumptive GOP nominee Donald Trump Donald John TrumpHouse committee believes it has evidence Trump requested putting ally in charge of Cohen probe: report Vietnamese airline takes steps to open flights to US on sidelines of Trump-Kim summit Manafort's attorneys say he should get less than 10 years in prison MORE's campaign finished May with just $1.3 million in the bank. Trump raised just $3.1 million for his campaign during May.