Here are all the 2020 Democratic presidential candidates who have qualified for the September primary debates

Sen. Bernie Sanders of Vermont has a massive national list of donors from which to solicit funds. Sanders also regularly falls in the top tier of candidates in most polling, despite losing some traction in recent months.

Sen. Kamala Harris of California received a big boost in both donations and polling support after her performance in the first June debate.

Sen. Elizabeth Warren of Massachusetts has climbed in polls after a rocky start to her campaign. She has also cultivated a grassroots, small-dollar network of supports fueling her campaign's finances.

South Bend, Indiana Mayor Pete Buttigieg has out-raised many of his Democratic colleagues, nabbing support from big Hollywood celebrities in the process. Buttigieg has also polled higher than much of the field, securing a spot in the fall debates.

Sen. Cory Booker of New Jersey surpassed both the polling and fundraising criteria in July, securing a spot in the fall debates.

Former Rep. Beto O'Rourke of Texas received large financial support early on in his campaign. He has also polled well in a number of individual state surveys.