WASHINGTON — It's still early in the 2020 election cycle but among the crowded Democratic field heading to Detroit for a debate July 30-31, two have a clear edge in fundraising efforts to date.

U.S. Sen. Bernie Sanders of Vermont and Pete Buttigieg, the mayor of South Bend, Indiana, led 20 other Democrats in terms of contributions raised overall as of June 30, the most recent cutoff date for reporting.

Sanders , the runner-up for the Democratic nomination to Hillary Clinton in 2016, led with more than $36 million overall and had more than $27 million cash in the bank — more than any other Democrat.

, the runner-up for the Democratic nomination to Hillary Clinton in 2016, led with more than $36 million overall and had more than $27 million cash in the bank — more than any other Democrat. Buttigieg , meanwhile, saw his fundraising bolstered by a huge second-quarter haul of nearly $25 million, propelling his total to more than $32 million. He had nearly $23 million in the bank, second among all the Democratic candidates.

, meanwhile, saw his fundraising bolstered by a huge second-quarter haul of nearly $25 million, propelling his total to more than $32 million. He had nearly $23 million in the bank, second among all the Democratic candidates. But even as the 37-year-old Buttigieg — who is running for federal office for the first time — hammered most of the rest of the field in terms of second-quarter fundraising, a more recent entry was catching up as well: Former Vice President Joe Biden . Biden, who got into the race on April 25 — nearly a month into the second quarter — still raised more than $22 million, better than any candidate other than Buttigieg and outdistancing Sanders' $18 million haul during the three-month period. Biden had about $11 million in the bank as of June 30.

. Biden, who got into the race on April 25 — nearly a month into the second quarter — still raised more than $22 million, better than any candidate other than Buttigieg and outdistancing Sanders' $18 million haul during the three-month period. Biden had about $11 million in the bank as of June 30. Meanwhile, it appeared that two other top candidates, U.S. Sens. Elizabeth Warren of Massachusetts and Kamala Harris of California, were riding an uptick in interest in their campaigns and strong debate performances in Miami last month to fundraising success. Warren raised some $19 million in the second quarter to surpass $25 million overall. Harris, meanwhile, who had what many saw as a campaign-defining moment in the debate with Biden, the polling frontrunner, took in nearly $12 million during the April to June period and had raised $23 million overall.

of Massachusetts and of California, were riding an uptick in interest in their campaigns and strong debate performances in Miami last month to fundraising success. Warren raised some $19 million in the second quarter to surpass $25 million overall. Harris, meanwhile, who had what many saw as a campaign-defining moment in the debate with Biden, the polling frontrunner, took in nearly $12 million during the April to June period and had raised $23 million overall. If any of the top candidates seemed to struggle in the second quarter, it was former U.S. Rep. Beto O'Rourke of Texas, who raised $3.6 million — less than the other presumed leaders in the race and well off the more than $9 million in his first three weeks of campaigning.

All of the candidates, however, lag President Donald Trump in terms of fundraising: His three separate campaign committees have taken some $135 million in contributions, $68 million in the second quarter, though that may include some transfers to other political entities. As of June 30, they had some $80 million cash on hand.

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Contact Todd Spangler attspangler@freepress.com. Follow him on Twitter@tsspangler. Read more onMichigan politics and sign up for ourelections newsletter.