Washington (CNN) The Democratic National Committee on Friday raised the bar for presidential candidates to qualify for the January primary debate in Iowa.

In order to participate in the January 14 CNN/Des Moines Register debate, candidates will need to meet one of two polling requirements in addition to a fundraising requirement.

Candidates will either need to receive 5% in at least four DNC-approved national or early state (Iowa, New Hampshire, South Carolina, Nevada) polls, or receive 7% in two early state polls.

For the fundraising threshold, candidates need to receive donations from at least 225,00 unique donors, and a minimum of 1,000 unique donors per state in at least 20 different states. The qualifying window for polls and donations is November 14 to 11:59 p.m. on January 10, 2020. The fundraising threshold must also be reached by January 10.

The announcement comes the day after the sixth Democratic debate , which featured the smallest and least diverse field of candidates so far in the race. The DNC has been raising the thresholds for the debates, slowly shrinking the field of Democrats on the high-profile debate stages.

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